640648363680

Names of 640648363680

• Cardinal: 640648363680 can be written as Six hundred forty billion, six hundred forty-eight million, three hundred sixty-three thousand, six hundred eighty.

Scientific notation

• Scientific notation: 6.4064836368 × 10¹¹

Factors of 640648363680

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 481

Divisors of 640648363680

• Number of divisors d(n): 720
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 26 30 32 36 37 39 40 45 48 52 60 65 72 74 78 80 90 96 104 111 117 120 130 144 148 156 160 169 180 185 195 208 222 234 240 260 288 296 312 333 338 360 370 390 416 421 444 468 480 481 507 520 555 585 592 624 666 676 720 740 780 842 845 888 936 962 1014 1040 1110 1170 1184 1248 1263 1332 1352 1440 1443 1480 1521 1560 1665 1684 1690 1776 1872 1924 2028 2080 2105 2197 2220 2340 2405 2526 2535 2664 2704 2886 2960 3042 3120 3330 3368 3380 3552 3744 3789 3848 4056 4210 4329 4394 4440 4680 4810 5052 5070 5328 5408 5473 5772 5920 6084 6240 6253 6315 6591 6660 6736 6760 7215 7578 7605 7696 8112 8420 8658 8788 8880 9360 9620 10104 10140 10656 10946 10985 11544 12168 12506 12630 13182 13320 13472 13520 14430 15156 15210 15392 15577 16224 16419 16840 17316 17576 17760 18720 18759 18945 19240 19773 20208 20280 21645 21892 21970 23088 24336 25012 25260 26364 26640 27040 27365 28561 28860 30312 30420 31154 31265 32838 32955 33680 34632 35152 37518 37890 38480 39546 40416 40560 43290 43784 43940 46176 46731 48672 49257 50024 50520 52728 53280 54730 56277 57122 57720 60624 60840 62308 62530 65676 65910 67360 69264 70304 71149 75036 75780 76960 77885 79092 81120 81289 82095 85683 86580 87568 87880 93462 93795 98514 98865 100048 101040 105456 109460 112554 114244 115440 121248 121680 124616 125060 131352 131820 138528 140193 142298 142805 150072 151560 155770 158184 162578 164190 171366 173160 175136 175760 186924 187590 197028 197730 200096 202080 202501 210912 213447 218920 225108 228488 230880 233655 243360 243867 246285 249232 250120 257049 262704 263640 280386 281385 284596 285610 300144 303120 311540 316368 325156 328380 342732 346320 351520 355745 373848 375180 394056 395460 405002 406445 426894 428415 437840 450216 456976 467310 487734 492570 498464 500240 514098 525408 527280 560772 562770 569192 571220 600288 606240 607503 623080 632736 640341 650312 656760 685464 692640 700965 711490 731601 747696 750360 788112 790920 810004 812890 853788 856830 875680 900432 913952 924937 934620 975468 985140 1000480 1012505 1028196 1054560 1056757 1067235 1121544 1125540 1138384 1142440 1215006 1219335 1246160 1280682 1285245 1300624 1313520 1370928 1401930 1422980 1463202 1495392 1500720 1576224 1581840 1620008 1625780 1707576 1713660 1800864 1822509 1849874 1869240 1950936 1970280 2025010 2056392 2113514 2134470 2243088 2251080 2276768 2284880 2430012 2438670 2492320 2561364 2570490 2601248 2627040 2632513 2741856 2774811 2803860 2845960 2926404 3001440 3037515 3163680 3170271 3201705 3240016 3251560 3415152 3427320 3645018 3658005 3699748 3738480 3901872 3940560 4050020 4112784 4227028 4268940 4486176 4502160 4569760 4624685 4860024 4877340 5122728 5140980 5265026 5283785 5549622 5607720 5691920 5852808 6075030 6340542 6403410 6480032 6503120 6830304 6854640 7290036 7316010 7399496 7476960 7803744 7881120 7897539 8100040 8225568 8324433 8454056 8537880 9004320 9112545 9249370 9510813 9720048 9754680 10245456 10281960 10530052 10567570 11099244 11215440 11383840 11705616 12024181 12150060 12681084 12806820 13006240 13162565 13709280 13874055 14580072 14632020 14798992 15795078 15851355 16200080 16648866 16908112 17075760 18225090 18498740 19021626 19440096 19509360 20490912 20563920 21060104 21135140 22198488 22430880 23411232 23692617 24048362 24300120 25362168 25613640 26325130 27748110 29160144 29264040 29597984 31590156 31702710 32400160 33297732 33816224 34151520 34222669 36072543 36450180 36997480 38043252 39018720 39487695 41127840 41622165 42120208 42270280 44396976 47385234 47554065 48096724 48600240 50724336 51227280 52650260 55496220 58320288 58528080 60120905 63180312 63405420 66595464 68445338 72145086 72900360 73994960 76086504 78975390 83244330 84240416 84540560 88793952 94770468 95108130 96193448 97200480 101448672 102454560 102668007 105300520 108217629 110992440 117056160 118463085 120241810 126360624 126810840 133190928 136890676 144290172 145800720 147989920 152173008 157950780 166488660 169081120 171113345 180362715 189540936 190216260 192386896 205336014 210601040 216435258 221984880 236926170 240483620 252721248 253621680 266381856 273781352 288580344 291601440 304346016 308004021 315901560 332977320 342226690 360725430 379081872 380432520 384773792 410672028 421202080 432870516 443969760 444894697 473852340 480967240 507243360 513340035 541088145 547562704 577160688 616008042 631803120 665954640 684453380 721450860 758163744 760865040 821344056 865741032 889789394 947704680 961934480 1026680070 1082176290 1095125408 1154321376 1232016084 1263606240 1331909280 1334684091 1368906760 1442901720 1521730080 1540020105 1642688112 1731482064 1779578788 1895409360 1923868960 2053360140 2164352580 2224473485 2464032168 2669368182 2737813520 2885803440 3080040210 3285376224 3462964128 3559157576 3790818720 4004052273 4106720280 4328705160 4448946970 4928064336 5338736364 5475627040 5771606880 6160080420 6673420455 7118315152 8008104546 8213440560 8657410320 8897893940 9856128672 10677472728 12320160840 13346840910 14236630304 16016209092 16426881120 17314820640 17795787880 20020261365 21354945456 24640321680 26693681820 32032418184 35591575760 40040522730 42709890912 49280643360 53387363640 64064836368 71183151520 80081045460 106774727280 128129672736 160162090920 213549454560 320324181840 640648363680
• Sum of all divisors σ(n): 2438178770664
• Sum of proper divisors (its aliquot sum) s(n): 1797530406984
• 640648363680 is an abundant number, because the sum of its proper divisors (1797530406984) is greater than itself. Its abundance is 1156882043304

Bases of 640648363680

• Binary: 1001010100101001100111100011111010100000₂
• Hexadecimal: 0x95299E3EA0
• Base-36: 86B5HT40

Squares and roots of 640648363680

• 640648363680 squared (640648363680²) is 410430325885861543142400
• 640648363680 cubed (640648363680³) is 262941516683426344061218285228032000
• The square root of 640648363680 is 800405.1247212251
• The cube root of 640648363680 is 8620.6478971387

Scales and comparisons

• 640,648,363,680 seconds is equal to 20,370 years, 33 weeks, 14 hours, 48 minutes.
• To count from 1 to 640,648,363,680 would take you about forty thousand, seven hundred forty-one 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 640648363680 cubic inches would be around 718.4 feet tall.

Recreational maths with 640648363680

• 640648363680 backwards is 086363846046
• The number of decimal digits it has is: 12
• The sum of 640648363680's digits is 54
• More coming soon!