664081520427

Names of 664081520427

• Cardinal: 664081520427 can be written as Six hundred sixty-four billion, eighty-one million, five hundred twenty thousand, four hundred twenty-seven.

Scientific notation

• Scientific notation: 6.64081520427 × 10¹¹

Factors of 664081520427

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 4619

Divisors of 664081520427

• Number of divisors d(n): 72
• Complete list of divisors:
  1 3 9 13 39 43 117 129 387 559 821 1677 1849 2463 3739 5031 5547 7389 10673 11217 16641 24037 32019 33651 35303 48607 72111 96057 105909 145821 160777 216333 317727 437463 458939 482331 1376817 1446993 1518029 2090101 3069719 4130451 4554087 6270303 6913411 9209157 13662261 18810909 19734377 20740233 27627471 39906347 59203131 62220699 89874343 119719041 131997917 177609393 269623029 359157123 395993751 808869087 1187981253 1715972921 5147918763 5675910431 15443756289 17027731293 51083193879 73786835603 221360506809 664081520427
• Sum of all divisors σ(n): 1059169391280
• Sum of proper divisors (its aliquot sum) s(n): 395087870853
• 664081520427 is a deficient number, because the sum of its proper divisors (395087870853) is less than itself. Its deficiency is 268993649574

Bases of 664081520427

• Binary: 1001101010011110010101111101011100101011₂
• Hexadecimal: 0x9A9E57D72B
• Base-36: 8H2OZOKR

Squares and roots of 664081520427

• 664081520427 squared (664081520427²) is 441004265772636018262329
• 664081520427 cubed (664081520427³) is 292862783329084922899310780858094483
• The square root of 664081520427 is 814911.9709680303
• The cube root of 664081520427 is 8724.4983542673

Scales and comparisons

• 664,081,520,427 seconds is equal to 21,115 years, 38 weeks, 2 days, 17 hours, 27 seconds.
• To count from 1 to 664,081,520,427 would take you about forty-two thousand, two hundred thirty-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 664081520427 cubic inches would be around 727 feet tall.

Recreational maths with 664081520427

• 664081520427 backwards is 724025180466
• The number of decimal digits it has is: 12
• The sum of 664081520427's digits is 45
• More coming soon!