640797780672

Names of 640797780672

• Cardinal: 640797780672 can be written as Six hundred forty billion, seven hundred ninety-seven million, seven hundred eighty thousand, six hundred seventy-two.

Scientific notation

• Scientific notation: 6.40797780672 × 10¹¹

Factors of 640797780672

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 143

Divisors of 640797780672

• Number of divisors d(n): 630
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 32 36 42 48 49 54 56 63 64 72 81 84 96 98 108 112 126 131 144 147 162 168 189 192 196 216 224 243 252 262 288 294 324 336 343 378 392 393 432 441 448 486 504 524 567 576 588 648 672 686 756 784 786 864 882 917 972 1008 1029 1048 1134 1176 1179 1296 1323 1344 1372 1512 1568 1572 1701 1728 1764 1834 1944 2016 2058 2096 2268 2352 2358 2401 2592 2646 2744 2751 3024 3087 3136 3144 3402 3528 3537 3668 3888 3969 4032 4116 4192 4536 4704 4716 4802 5184 5292 5488 5502 6048 6174 6288 6419 6804 7056 7074 7203 7336 7776 7938 8232 8253 8384 9072 9261 9408 9432 9604 10584 10611 10976 11004 11907 12096 12348 12576 12838 13608 14112 14148 14406 14672 15552 15876 16464 16506 17161 18144 18522 18864 19208 19257 21168 21222 21609 21952 22008 23814 24696 24759 25152 25676 27216 27783 28224 28296 28812 29344 31752 31833 32928 33012 34322 36288 37044 37728 38416 38514 42336 42444 43218 44016 44933 47628 49392 49518 51352 51483 54432 55566 56592 57624 57771 58688 63504 63666 64827 65856 66024 68644 74088 74277 75456 76832 77028 83349 84672 84888 86436 88032 89866 95256 98784 99036 102704 102966 108864 111132 113184 115248 115542 120127 127008 127332 129654 132048 134799 137288 148176 148554 153664 154056 154449 166698 169776 172872 173313 176064 179732 190512 194481 197568 198072 205408 205932 222264 222831 226368 230496 231084 240254 254016 254664 259308 264096 269598 274576 296352 297108 308112 308898 314531 333396 339552 345744 346626 359464 360381 381024 388962 396144 404397 410816 411864 444528 445662 460992 462168 463347 480508 509328 518616 519939 528192 539196 549152 583443 592704 594216 616224 617796 629062 666792 679104 691488 693252 718928 720762 762048 777924 792288 808794 823728 840889 889056 891324 924336 926694 943593 961016 1018656 1037232 1039878 1078392 1081143 1098304 1166886 1188432 1213191 1232448 1235592 1258124 1333584 1382976 1386504 1390041 1437856 1441524 1555848 1559817 1584576 1617588 1647456 1681778 1778112 1782648 1848672 1853388 1887186 1922032 2037312 2074464 2079756 2156784 2162286 2333772 2376864 2426382 2471184 2516248 2522667 2667168 2773008 2780082 2830779 2875712 2883048 3111696 3119634 3235176 3243429 3294912 3363556 3565296 3639573 3697344 3706776 3774372 3844064 4148928 4159512 4170123 4313568 4324572 4667544 4753728 4852764 4942368 5032496 5045334 5334336 5546016 5560164 5661558 5766096 5886223 6223392 6239268 6470352 6486858 6727112 7130592 7279146 7413552 7548744 7568001 7688128 8319024 8340246 8492337 8627136 8649144 9335088 9705528 9730287 9884736 10064992 10090668 10918719 11092032 11120328 11323116 11532192 11772446 12446784 12478536 12940704 12973716 13454224 14261184 14558292 14827104 15097488 15136002 16638048 16680492 16984674 17298288 17658669 18670176 19411056 19460574 20129984 20181336 21837438 22240656 22646232 22704003 23064384 23544892 24957072 25477011 25881408 25947432 26908448 29116584 29190861 29654208 30194976 30272004 33276096 33360984 33969348 34596576 35317338 37340352 38822112 38921148 40362672 41203561 43674876 44481312 45292464 45408006 47089784 49914144 50954022 51894864 52976007 53816896 58233168 58381722 60389952 60544008 66721968 67938696 68112009 69193152 70634676 76431033 77644224 77842296 80725344 82407122 87349752 88962624 90584928 90816012 94179568 99828288 101908044 103789728 105952014 116466336 116763444 121088016 123610683 133443936 135877392 136224018 141269352 152862066 155684592 158928021 161450688 164814244 174699504 181169856 181632024 188359136 203816088 204336027 207579456 211904028 232932672 233526888 242176032 247221366 266887872 271754784 272448036 282538704 305724132 311369184 317856042 329628488 349399008 363264048 370832049 376718272 407632176 408672054 423808056 467053776 476784063 484352064 494442732 543509568 544896072 565077408 611448264 622738368 635712084 659256976 698798016 726528096 741664098 815264352 817344108 847616112 934107552 953568126 988885464 1089792144 1112496147 1130154816 1222896528 1271424168 1318513952 1430352189 1453056192 1483328196 1630528704 1634688216 1695232224 1868215104 1907136252 1977770928 2179584288 2224992294 2445793056 2542848336 2637027904 2860704378 2966656392 3269376432 3337488441 3390464448 3814272504 3955541856 4359168576 4449984588 4891586112 5085696672 5721408756 5933312784 6538752864 6674976882 7628545008 7911083712 8899969176 10012465323 10171393344 11442817512 11866625568 13077505728 13349953764 15257090016 17799938352 20024930646 22885635024 23733251136 26699907528 30514180032 35599876704 40049861292 45771270048 53399815056 71199753408 80099722584 91542540096 106799630112 160199445168 213599260224 320398890336 640797780672
• Sum of all divisors σ(n): 2239177672004
• Sum of proper divisors (its aliquot sum) s(n): 1598379891332
• 640797780672 is an abundant number, because the sum of its proper divisors (1598379891332) is greater than itself. Its abundance is 957582110660

Bases of 640797780672

• Binary: 1001010100110010100001100010101011000000₂
• Hexadecimal: 0x9532862AC0
• Base-36: 86DMGC00

Squares and roots of 640797780672

• 640797780672 squared (640797780672²) is 410621795714160616771584
• 640797780672 cubed (640797780672³) is 263125535389185484510577728754024448
• The square root of 640797780672 is 800498.4576324929
• The cube root of 640797780672 is 8621.3180365507

Scales and comparisons

• 640,797,780,672 seconds is equal to 20,375 years, 20 weeks, 23 hours, 31 minutes, 12 seconds.
• To count from 1 to 640,797,780,672 would take you about forty thousand, seven hundred fifty 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 640797780672 cubic inches would be around 718.4 feet tall.

Recreational maths with 640797780672

• 640797780672 backwards is 276087797046
• 640797780672 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 640797780672's digits is 63
• More coming soon!