668388407940

Names of 668388407940

• Cardinal: 668388407940 can be written as Six hundred sixty-eight billion, three hundred eighty-eight million, four hundred seven thousand, nine hundred forty.

Scientific notation

• Scientific notation: 6.6838840794 × 10¹¹

Factors of 668388407940

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 570

Divisors of 668388407940

• Number of divisors d(n): 864
• Complete list of divisors:
  1 2 3 4 5 6 9 10 11 12 15 18 19 20 22 27 30 33 36 38 44 45 54 55 57 60 66 76 81 90 95 99 108 110 114 121 132 135 162 163 165 171 180 190 198 209 220 228 242 243 270 285 297 324 326 330 342 363 367 380 396 405 418 484 486 489 495 513 540 570 594 605 627 652 660 684 726 734 810 815 836 855 891 972 978 990 1026 1045 1089 1101 1140 1188 1210 1215 1254 1452 1467 1468 1485 1539 1620 1630 1710 1782 1793 1815 1835 1881 1956 1980 2052 2090 2178 2202 2299 2420 2430 2445 2508 2565 2673 2934 2970 3078 3097 3135 3260 3267 3303 3420 3564 3586 3630 3670 3762 4037 4180 4356 4401 4404 4455 4598 4617 4860 4890 5130 5346 5379 5445 5505 5643 5868 5940 6156 6194 6270 6534 6606 6897 6973 7172 7260 7335 7340 7524 7695 8074 8802 8910 8965 9196 9234 9291 9405 9780 9801 9909 10260 10692 10758 10890 11010 11286 11495 12111 12388 12540 13068 13203 13212 13365 13794 13946 14670 15390 15485 16137 16148 16335 16515 16929 17604 17820 17930 18468 18582 18810 19602 19723 19818 20185 20691 20919 21516 21780 22005 22020 22572 22990 23085 24222 26406 26730 26895 27588 27873 27892 28215 29340 29403 29727 30780 30970 32274 32670 33030 33858 34067 34485 34865 35860 36333 37164 37620 39204 39446 39609 39636 40370 41382 41838 44010 44407 45980 46170 46455 48411 48444 49005 49545 50787 52812 53460 53790 55746 56430 58806 59169 59454 59821 60555 61940 62073 62757 64548 65340 66015 66060 67716 68134 68970 69730 72666 76703 78892 79218 80685 80740 82764 83619 83676 84645 88020 88814 89181 92340 92910 96822 98010 98615 99090 101574 102201 103455 104595 107580 108999 111492 112860 117612 118338 118908 119642 121110 124146 125514 132030 133221 136268 137940 139365 139460 145233 145332 147015 148635 153406 158436 161370 167238 169290 170335 177507 177628 178362 179463 181665 185820 186219 188271 193644 196020 197230 198045 198180 203148 204402 206910 209190 217998 222035 230109 236676 239284 242055 242220 248292 250857 251028 253935 264060 266442 278730 290466 294030 295845 297270 299105 306603 306812 310365 313785 322740 326997 334476 338580 340670 355014 356724 358926 363330 372438 374737 376542 383515 394460 396090 399663 408804 413820 418095 418380 435699 435996 444070 445905 460218 484110 501714 507870 511005 532521 532884 538389 544995 557460 558657 564813 580932 588060 591690 594540 598210 613206 620730 627570 653994 658031 666105 681340 690327 710028 717852 726165 726660 744876 749474 752571 753084 767030 792180 799326 836190 843733 871398 887535 888140 891810 897315 919809 920436 931095 941355 968220 980991 1003428 1015740 1022010 1065042 1076778 1089990 1117314 1124211 1129626 1136599 1150545 1183380 1196420 1198989 1226412 1241460 1254285 1255140 1307988 1316062 1332210 1380654 1452330 1498948 1505142 1533015 1534060 1597563 1598652 1615167 1634985 1672380 1687466 1694439 1742796 1775070 1783620 1794630 1839618 1862190 1873685 1882710 1961982 1974093 1998315 2044020 2070981 2130084 2153556 2178495 2179980 2234628 2248422 2259252 2273198 2301090 2397978 2508570 2531199 2632124 2662605 2664420 2691945 2759427 2761308 2793285 2824065 2904660 3010284 3066030 3195126 3230334 3269970 3290155 3372633 3374932 3388878 3409797 3451635 3550140 3589260 3596967 3679236 3724380 3747370 3762855 3765420 3923964 3948186 3996630 4141962 4218665 4356990 4496844 4546396 4599045 4602180 4792689 4795956 4845501 4904955 5017140 5062398 5325210 5383890 5518854 5586570 5621055 5648130 5682995 5922279 5994945 6132060 6212943 6390252 6460668 6539940 6580310 6745266 6777756 6819594 6903270 7193934 7238341 7494740 7525710 7593597 7896372 7987815 7993260 8075835 8278281 8283924 8437330 8472195 8713980 9198090 9585378 9691002 9809910 9870465 10117899 10124796 10229391 10354905 10650420 10767780 10790901 11037708 11173140 11242110 11296260 11365990 11844558 11989890 12425886 12502589 12655995 13160620 13490532 13639188 13797135 13806540 14387868 14476682 14536503 15051420 15187194 15975630 16151670 16556562 16863165 16874660 16944390 17048985 17766837 17984835 18396180 18638829 19170756 19382004 19619820 19740930 20235798 20458782 20709810 21581802 21715023 22484220 22731980 22780791 23689116 23963445 23979780 24227505 24851772 25005178 25311990 27594270 28953364 29073006 29611395 30353697 30374388 30688173 31064715 31951260 32303340 33113124 33726330 33888780 34097970 35533674 35969670 36191705 37277658 37507767 37967985 39481860 40471596 40917564 41391405 41419620 43163604 43430046 45561582 47926890 48455010 50010356 50589495 50623980 51146955 53300511 53954505 55188540 58146012 59222790 60707394 61376346 62129430 62512945 65145069 67452660 68195940 68342373 71067348 71939340 72383410 72682515 74555316 75015534 75935970 82782810 86860092 88834185 91061091 91123164 92064519 93194145 95853780 96910020 101178990 102293910 106601022 107909010 108575115 112523301 113903955 118445580 121414788 122752692 124258860 125025890 130290138 136684746 137528479 144766820 145365030 150031068 151768485 151871940 153440865 159901533 165565620 177668370 182122182 184129038 186388290 187538835 195435207 202357980 204587820 205027119 213202044 215818020 217150230 225046602 227807910 250051780 260580276 266502555 273369492 275056958 276193557 290730060 303536970 306881730 319803066 325725345 337569903 341711865 355336740 364244364 368258076 372776580 375077670 390870414 410054238 412585437 434300460 450093204 455305455 455615820 460322595 533005110 550113916 552387114 562616505 586305621 607073940 613763460 639606132 651450690 675139806 683423730 687642395 750155340 781740828 799507665 820108476 825170874 910610910 920645190 977176035 1012709709 1025135595 1066010220 1104774228 1125233010 1172611242 1237756311 1302901380 1350279612 1366847460 1375284790 1380967785 1599015330 1650341748 1687849515 1758916863 1821221820 1841290380 1954352070 2025419418 2050271190 2062927185 2250466020 2345222484 2475512622 2750569580 2761935570 2931528105 3038129127 3198030660 3375699030 3517833726 3713268933 3908704140 4050838836 4100542380 4125854370 4951025244 5063548545 5523871140 5863056210 6076258254 6188781555 6751398060 7035667452 7426537866 8251708740 8794584315 10127097090 11139806799 11726112420 12152516508 12377563110 14853075732 15190645635 17589168630 18566344665 20254194180 22279613598 24755126220 30381291270 33419420397 35178337260 37132689330 44559227196 55699033995 60762582540 66838840794 74265378660 111398067990 133677681588 167097101985 222796135980 334194203970 668388407940
• Sum of all divisors σ(n): 2454279260160
• Sum of proper divisors (its aliquot sum) s(n): 1785890852220
• 668388407940 is an abundant number, because the sum of its proper divisors (1785890852220) is greater than itself. Its abundance is 1117502444280

Bases of 668388407940

• Binary: 1001101110011111000011011011101010000100₂
• Hexadecimal: 0x9B9F0DBA84
• Base-36: 8J1X7890

Squares and roots of 668388407940

• 668388407940 squared (668388407940²) is 446743063868567855043600
• 668388407940 cubed (668388407940³) is 298597885217349806040452503286184000
• The square root of 668388407940 is 817550.2479603317
• The cube root of 668388407940 is 8743.3185802551

Scales and comparisons

• 668,388,407,940 seconds is equal to 21,252 years, 35 weeks, 3 days, 22 hours, 39 minutes.
• To count from 1 to 668,388,407,940 would take you about forty-two thousand, five hundred five years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 668388407940 cubic inches would be around 728.6 feet tall.

Recreational maths with 668388407940

• 668388407940 backwards is 049704883866
• The number of decimal digits it has is: 12
• The sum of 668388407940's digits is 63
• More coming soon!