664642668420

Names of 664642668420

• Cardinal: 664642668420 can be written as Six hundred sixty-four billion, six hundred forty-two million, six hundred sixty-eight thousand, four hundred twenty.

Scientific notation

• Scientific notation: 6.6464266842 × 10¹¹

Factors of 664642668420

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 926436

Divisors of 664642668420

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 4003 8006 12009 16012 20015 24018 36027 40030 48036 60045 72054 80060 120090 144108 180135 240180 360270 720540 922423 1844846 2767269 3689692 4612115 5534538 8301807 9224230 11069076 13836345 16603614 18448460 27672690 33207228 41509035 55345380 83018070 166036140 3692459269 7384918538 11077377807 14769837076 18462296345 22154755614 33232133421 36924592690 44309511228 55386889035 66464266842 73849185380 110773778070 132928533684 166160667105 221547556140 332321334210 664642668420
• Sum of all divisors σ(n): 2016588590016
• Sum of proper divisors (its aliquot sum) s(n): 1351945921596
• 664642668420 is an abundant number, because the sum of its proper divisors (1351945921596) is greater than itself. Its abundance is 687303253176

Bases of 664642668420

• Binary: 1001101010111111110010100100011110000100₂
• Hexadecimal: 0x9ABFCA4784
• Base-36: 8HBZ3150

Squares and roots of 664642668420

• 664642668420 squared (664642668420²) is 441749876684458065296400
• 664642668420 cubed (664642668420³) is 293605816813764150860189894219688000
• The square root of 664642668420 is 815256.1980261175
• The cube root of 664642668420 is 8726.9550588911

Scales and comparisons

• 664,642,668,420 seconds is equal to 21,133 years, 30 weeks, 1 day, 11 hours, 27 minutes.
• To count from 1 to 664,642,668,420 would take you about forty-two thousand, two hundred sixty-seven 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 664642668420 cubic inches would be around 727.2 feet tall.

Recreational maths with 664642668420

• 664642668420 backwards is 024866246466
• The number of decimal digits it has is: 12
• The sum of 664642668420's digits is 54
• More coming soon!