640829222865

Names of 640829222865

• Cardinal: 640829222865 can be written as Six hundred forty billion, eight hundred twenty-nine million, two hundred twenty-two thousand, eight hundred sixty-five.

Scientific notation

• Scientific notation: 6.40829222865 × 10¹¹

Factors of 640829222865

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 493

Divisors of 640829222865

• Number of divisors d(n): 288
• Complete list of divisors:
  1 3 5 9 13 15 19 31 39 45 57 65 73 93 95 117 155 171 195 219 247 279 285 349 365 403 465 585 589 657 741 855 949 1047 1095 1209 1235 1387 1395 1745 1767 2015 2223 2263 2847 2945 3141 3285 3627 3705 4161 4537 4745 5235 5301 5329 6045 6631 6789 6935 7657 8541 8835 10819 11115 11315 12483 13611 14235 15705 15987 18031 18135 19893 20367 20805 22685 22971 25477 26505 26645 29419 32457 33155 33945 38285 40833 42705 42997 47961 54093 54095 59679 62415 68055 68913 69277 76431 79935 86203 88257 90155 97371 99465 101251 101835 114855 127385 128991 140647 147095 162279 162285 165199 204165 205561 207831 214985 229293 239805 258609 264771 270465 298395 303753 331201 344565 346385 382155 386973 421941 431015 441285 484063 486855 495597 506255 558961 616683 623493 644955 703235 775827 789787 811395 825995 911259 993603 1027805 1039155 1146465 1265823 1293045 1316263 1323855 1452189 1486791 1518765 1656005 1676883 1850049 1859821 1934865 2109705 2147587 2369361 2420315 2477985 2672293 2794805 2980809 3083415 3117465 3138781 3879135 3948789 3948935 4356567 4556295 4968015 5030649 5579463 6292819 6329115 6442761 6581315 7108083 7260945 7433955 8016879 8384415 9250245 9299105 9416343 10267231 10737935 11846367 11846805 13361465 14904045 15005953 15693905 16738389 18878457 19328283 19743945 21782835 24050637 24177673 25153245 27897315 28249029 30801693 31464095 32213805 35336599 35540415 40084395 40804153 45017859 47081715 51336155 56635371 57654451 59231835 72533019 75029765 83691945 92405079 94392285 96641415 106009797 120253185 120888365 122412459 135053577 141245145 154008465 172963353 176682995 195077389 204020765 217599057 225089295 283176855 288272255 318029391 362665095 367237377 459375787 462025395 518890059 530048985 585232167 612062295 675267885 749507863 864816765 975386945 1087995285 1095434569 1378127361 1590146955 1755696501 1836186885 2248523589 2296878935 2594450295 2926160835 3286303707 3747539315 4134382083 5477172845 6745570767 6890636805 8778482505 9858911121 11242617945 14240649397 16431518535 20671910415 33727853835 42721948191 49294555605 71203246985 128165844573 213609740955 640829222865
• Sum of all divisors σ(n): 1321617024000
• Sum of proper divisors (its aliquot sum) s(n): 680787801135
• 640829222865 is an abundant number, because the sum of its proper divisors (680787801135) is greater than itself. Its abundance is 39958578270

Bases of 640829222865

• Binary: 1001010100110100011001011110111111010001₂
• Hexadecimal: 0x953465EFD1
• Base-36: 86E568Y9

Squares and roots of 640829222865

• 640829222865 squared (640829222865²) is 410662092877759838808225
• 640829222865 cubed (640829222865³) is 263164269838969288945582494520064625
• The square root of 640829222865 is 800518.0965256189
• The cube root of 640829222865 is 8621.4590424031

Scales and comparisons

• 640,829,222,865 seconds is equal to 20,376 years, 20 weeks, 21 hours, 27 minutes, 45 seconds.
• To count from 1 to 640,829,222,865 would take you about forty thousand, seven hundred fifty-two 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 640829222865 cubic inches would be around 718.5 feet tall.

Recreational maths with 640829222865

• 640829222865 backwards is 568222928046
• The number of decimal digits it has is: 12
• The sum of 640829222865's digits is 54
• More coming soon!