664438656

Names of 664438656

• Cardinal: 664438656 can be written as Six hundred sixty-four million, four hundred thirty-eight thousand, six hundred fifty-six.

Scientific notation

• Scientific notation: 6.64438656 × 10⁸

Factors of 664438656

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1800

Divisors of 664438656

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 64 84 96 112 128 151 168 192 224 302 336 384 448 453 604 672 896 906 1057 1208 1344 1637 1812 2114 2416 2688 3171 3274 3624 4228 4832 4911 6342 6548 7248 8456 9664 9822 11459 12684 13096 14496 16912 19328 19644 22918 25368 26192 28992 33824 34377 39288 45836 50736 52384 57984 67648 68754 78576 91672 101472 104768 135296 137508 157152 183344 202944 209536 247187 275016 314304 366688 405888 494374 550032 628608 733376 741561 988748 1100064 1466752 1483122 1730309 1977496 2200128 2966244 3460618 3954992 4400256 5190927 5932488 6921236 7909984 10381854 11864976 13842472 15819968 20763708 23729952 27684944 31639936 41527416 47459904 55369888 83054832 94919808 110739776 166109664 221479552 332219328 664438656
• Sum of all divisors σ(n): 2031644160
• Sum of proper divisors (its aliquot sum) s(n): 1367205504
• 664438656 is an abundant number, because the sum of its proper divisors (1367205504) is greater than itself. Its abundance is 702766848

Bases of 664438656

• Binary: 100111100110101000011110000000₂
• Hexadecimal: 0x279A8780
• Base-36: AZL85C

Squares and roots of 664438656

• 664438656 squared (664438656²) is 441478727587086336
• 664438656 cubed (664438656³) is 293335532410553768047804416
• The square root of 664438656 is 25776.7076252961
• The cube root of 664438656 is 872.6062053017

Scales and comparisons

• 664,438,656 seconds is equal to 21 years, 6 weeks, 4 days, 6 hours, 17 minutes, 36 seconds.
• To count from 1 to 664,438,656 would take you about 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 664438656 cubic inches would be around 72.7 feet tall.

Recreational maths with 664438656

• 664438656 backwards is 656834466
• 664438656 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 664438656's digits is 48
• More coming soon!