640705109317

Names of 640705109317

• Cardinal: 640705109317 can be written as Six hundred forty billion, seven hundred five million, one hundred nine thousand, three hundred seventeen.

Scientific notation

• Scientific notation: 6.40705109317 × 10¹¹

Factors of 640705109317

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 320

Divisors of 640705109317

• Number of divisors d(n): 72
• Complete list of divisors:
  1 7 13 19 91 133 169 247 281 361 1183 1729 1967 2527 3211 3653 4693 5339 6859 22477 25571 32851 37373 47489 48013 61009 69407 78961 89167 101441 332423 427063 485849 552727 624169 710087 902291 1026493 1159171 1318733 1500259 1927379 6316037 7185451 8114197 9231131 10501813 13344409 13491653 17143529 19503367 25055927 28504921 93410863 120004703 136523569 175391489 199534447 253543771 325727051 370563973 541593499 1774806397 2280089357 2593947811 3791154493 4817331649 7040715487 33721321543 49285008409 91529301331 640705109317
• Sum of all divisors σ(n): 839925084480
• Sum of proper divisors (its aliquot sum) s(n): 199219975163
• 640705109317 is a deficient number, because the sum of its proper divisors (199219975163) is less than itself. Its deficiency is 441485134154

Bases of 640705109317

• Binary: 1001010100101101000000000001110101000101₂
• Hexadecimal: 0x952D001D45
• Base-36: 86C3A2BP

Squares and roots of 640705109317

• 640705109317 squared (640705109317²) is 410503037104908920206489
• 640705109317 cubed (640705109317³) is 263011393263261176918226964957758013
• The square root of 640705109317 is 800440.5720083159
• The cube root of 640705109317 is 8620.9024151871

Scales and comparisons

• 640,705,109,317 seconds is equal to 20,372 years, 22 weeks, 6 days, 9 hours, 28 minutes, 37 seconds.
• To count from 1 to 640,705,109,317 would take you about forty thousand, seven hundred forty-four 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 640705109317 cubic inches would be around 718.4 feet tall.

Recreational maths with 640705109317

• 640705109317 backwards is 713901507046
• The number of decimal digits it has is: 12
• The sum of 640705109317's digits is 43
• More coming soon!