640604844909

Names of 640604844909

• Cardinal: 640604844909 can be written as Six hundred forty billion, six hundred four million, eight hundred forty-four thousand, nine hundred nine.

Scientific notation

• Scientific notation: 6.40604844909 × 10¹¹

Factors of 640604844909

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 16919

Divisors of 640604844909

• Number of divisors d(n): 80
• Complete list of divisors:
  1 3 9 27 37 61 81 111 183 211 333 549 633 999 1647 1899 2257 2997 4941 5697 6771 7807 12871 16607 17091 20313 23421 38613 49821 60939 70263 115839 149463 182817 210789 347517 448389 476227 614459 632367 1013027 1042551 1345167 1428681 1843377 3039081 3504077 4286043 5530131 9117243 10512231 12858129 16590393 27351729 31536693 37481999 38574387 49771179 82055187 94610079 112445997 129650849 213748697 283830237 337337991 388952547 641246091 1012013973 1166857641 1923738273 3036041919 3500572923 5771214819 7908701789 10501718769 17313644457 23726105367 71178316101 213534948303 640604844909
• Sum of all divisors σ(n): 1003722948096
• Sum of proper divisors (its aliquot sum) s(n): 363118103187
• 640604844909 is a deficient number, because the sum of its proper divisors (363118103187) is less than itself. Its deficiency is 277486741722

Bases of 640604844909

• Binary: 1001010100100111000001100011001101101101₂
• Hexadecimal: 0x952706336D
• Base-36: 86AFL1T9

Squares and roots of 640604844909

• 640604844909 squared (640604844909²) is 410374567320883943218281
• 640604844909 cubed (640604844909³) is 262887936053192838082135262338581429
• The square root of 640604844909 is 800377.9387945423
• The cube root of 640604844909 is 8620.4526946335

Scales and comparisons

• 640,604,844,909 seconds is equal to 20,369 years, 13 weeks, 22 hours, 15 minutes, 9 seconds.
• To count from 1 to 640,604,844,909 would take you about forty thousand, seven hundred thirty-eight 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 640604844909 cubic inches would be around 718.4 feet tall.

Recreational maths with 640604844909

• 640604844909 backwards is 909448406046
• The number of decimal digits it has is: 12
• The sum of 640604844909's digits is 54
• More coming soon!