668209508640

Names of 668209508640

• Cardinal: 668209508640 can be written as Six hundred sixty-eight billion, two hundred nine million, five hundred eight thousand, six hundred forty.

Scientific notation

• Scientific notation: 6.6820950864 × 10¹¹

Factors of 668209508640

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 780

Divisors of 668209508640

• Number of divisors d(n): 768
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 31 32 36 40 45 48 54 60 61 62 72 80 90 93 96 108 120 122 124 135 144 155 157 160 180 183 186 216 240 244 248 270 279 288 305 310 314 360 366 372 432 465 471 480 488 496 521 540 549 558 610 620 628 720 732 744 785 837 864 915 930 942 976 992 1042 1080 1098 1116 1220 1240 1256 1395 1413 1440 1464 1488 1563 1570 1647 1674 1830 1860 1884 1891 1952 2084 2160 2196 2232 2355 2440 2480 2512 2605 2745 2790 2826 2928 2976 3126 3140 3294 3348 3660 3720 3768 3782 4168 4185 4239 4320 4392 4464 4689 4710 4867 4880 4960 5024 5210 5490 5580 5652 5673 5856 6252 6280 6588 6696 7065 7320 7440 7536 7564 7815 8235 8336 8370 8478 8784 8928 9378 9420 9455 9577 9734 9760 10420 10980 11160 11304 11346 12504 12560 13176 13392 14067 14130 14601 14640 14880 15072 15128 15630 16151 16470 16672 16740 16956 17019 17568 18756 18840 18910 19154 19468 20840 21195 21960 22320 22608 22692 23445 24335 25008 25120 26352 26784 28134 28260 28365 28731 29202 29280 30256 31260 31781 32302 32940 33480 33912 34038 37512 37680 37820 38308 38936 41680 42390 43803 43920 44640 45216 45384 46890 47885 48453 48670 50016 51057 52704 56268 56520 56730 57462 58404 60512 62520 63562 64604 65880 66960 67824 68076 70335 73005 75024 75360 75640 76616 77872 80755 81797 83360 84780 85095 86193 87606 87840 90768 93780 95343 95770 96906 97340 102114 112536 113040 113460 114924 116808 125040 127124 129208 131409 131760 133920 135648 136152 140670 143655 145359 146010 150048 151280 153232 155744 158905 161510 163594 169560 170190 172386 175212 181536 187560 190686 191540 193812 194680 204228 219015 225072 226080 226920 229848 233616 242265 245391 250080 254248 255285 258416 258579 262818 263520 272304 281340 286029 287310 290718 292020 296887 302560 306464 317810 323020 327188 339120 340380 344772 350424 375120 381372 383080 387624 389360 408456 408985 430965 436077 438030 450144 453840 459696 467232 476715 484530 490782 508496 510570 516832 517158 525636 544608 562680 572058 574620 581436 584040 593774 635620 646040 654376 657045 678240 680760 689544 700848 726795 736173 750240 762744 766160 775248 778720 816912 817970 858087 861930 872154 876060 890661 907680 919392 953430 969060 981564 985211 1016992 1021140 1034316 1051272 1125360 1144116 1149240 1162872 1168080 1187548 1226955 1271240 1292080 1292895 1308752 1314090 1361520 1379088 1401696 1430145 1453590 1472346 1484435 1525488 1532320 1550496 1633824 1635940 1716174 1723860 1744308 1752120 1781322 1906860 1938120 1963128 1970422 2042280 2068632 2102544 2180385 2208519 2250720 2288232 2298480 2325744 2336160 2375096 2453910 2535707 2542480 2584160 2585790 2617504 2628180 2671983 2723040 2758176 2860290 2907180 2944692 2955633 2968870 3050976 3271880 3432348 3447720 3488616 3504240 3562644 3680865 3813720 3876240 3926256 3940844 4084560 4137264 4205088 4290435 4360770 4417038 4453305 4576464 4596960 4651488 4750192 4907820 4926055 4989617 5071414 5084960 5171580 5256360 5343966 5720580 5814360 5889384 5911266 5937740 6543760 6864696 6895440 6977232 7008480 7125288 7361730 7607121 7627440 7752480 7852512 7881688 8015949 8169120 8274528 8580870 8721540 8834076 8866899 8906610 9152928 9500384 9815640 9852110 9979234 10142828 10343160 10512720 10687932 11042595 11441160 11628720 11778768 11822532 11875480 12678535 13087520 13359915 13729392 13790880 13954464 14250576 14723460 14778165 14968851 15214242 15254880 15763376 16031898 17161740 17443080 17668152 17733798 17813220 19631280 19704220 19958468 20285656 20686320 21025440 21375864 22085190 22821363 22882320 23257440 23557536 23645064 23750960 24948085 25357070 26600697 26719830 27458784 28501152 29446920 29556330 29937702 30428484 31526752 32063796 34323480 34886160 35336304 35467596 35626440 38035605 39262560 39408440 39916936 40079745 40571312 41372640 42751728 44170380 44334495 44906553 45642726 45764640 47290128 47501920 49896170 50714140 53201394 53439660 58893840 59112660 59875404 60856968 64127592 68464089 68646960 69772320 70672608 70935192 71252880 74844255 76071210 78816880 79833872 80159490 81142624 85503456 88340760 88668990 89813106 91285452 94580256 99792340 101428280 106402788 106879320 114106815 117787680 118225320 119750808 121713936 128255184 133003485 134719659 136928178 137293920 141870384 142505760 149688510 152142420 154678127 157633760 159667744 160318980 176681520 177337980 179626212 182570904 199584680 202856560 212805576 213758640 224532765 228213630 236450640 239501616 243427872 256510368 266006970 269439318 273856356 283740768 299377020 304284840 309356254 320637960 342320445 353363040 354675960 359252424 365141808 399169360 405713120 425611152 427517280 449065530 456427260 464034381 472901280 479003232 532013940 538878636 547712712 598754040 608569680 618712508 641275920 673598295 684640890 709351920 718504848 730283616 773390635 798338720 851222304 898131060 912854520 928068762 1064027880 1077757272 1095425424 1197508080 1217139360 1237425016 1282551840 1347196590 1369281780 1392103143 1418703840 1437009696 1546781270 1796262120 1825709040 1856137524 2128055760 2155514544 2190850848 2320171905 2395016160 2474850032 2694393180 2738563560 2784206286 3093562540 3592524240 3651418080 3712275048 4176309429 4256111520 4311029088 4640343810 4949700064 5388786360 5477127120 5568412572 6187125080 6960515715 7185048480 7424550096 8352618858 9280687620 10777572720 10954254240 11136825144 12374250160 13921031430 14849100192 16705237716 18561375240 20881547145 21555145440 22273650288 24748500320 27842062860 33410475432 37122750480 41763094290 44547300576 55684125720 66820950864 74245500960 83526188580 111368251440 133641901728 167052377160 222736502880 334104754320 668209508640
• Sum of all divisors σ(n): 2474121646080
• Sum of proper divisors (its aliquot sum) s(n): 1805912137440
• 668209508640 is an abundant number, because the sum of its proper divisors (1805912137440) is greater than itself. Its abundance is 1137702628800

Bases of 668209508640

• Binary: 1001101110010100011000111111000100100000₂
• Hexadecimal: 0x9B9463F120
• Base-36: 8IYYOSO0

Squares and roots of 668209508640

• 668209508640 squared (668209508640²) is 446503947436910234649600
• 668209508640 cubed (668209508640³) is 298358183322638175294996318572544000
• The square root of 668209508640 is 817440.8288310537
• The cube root of 668209508640 is 8742.5384384837

Scales and comparisons

• 668,209,508,640 seconds is equal to 21,246 years, 51 weeks, 5 days, 8 hours, 24 minutes.
• To count from 1 to 668,209,508,640 would take you about forty-two thousand, four hundred ninety-three 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 668209508640 cubic inches would be around 728.5 feet tall.

Recreational maths with 668209508640

• 668209508640 backwards is 046805902866
• 668209508640 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 668209508640's digits is 54
• More coming soon!