668118220

Names of 668118220

• Cardinal: 668118220 can be written as Six hundred sixty-eight million, one hundred eighteen thousand, two hundred twenty.

Scientific notation

• Scientific notation: 6.6811822 × 10⁸

Factors of 668118220

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1421

Divisors of 668118220

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 5 7 10 11 14 20 22 28 35 44 55 70 77 110 140 154 220 308 385 467 770 929 934 1540 1858 1868 2335 3269 3716 4645 4670 5137 6503 6538 9290 9340 10219 10274 13006 13076 16345 18580 20438 20548 25685 26012 32515 32690 35959 40876 51095 51370 65030 65380 71533 71918 102190 102740 130060 143066 143836 179795 204380 286132 357665 359590 433843 715330 719180 867686 1430660 1735372 2169215 3036901 4338430 4772273 6073802 8676860 9544546 12147604 15184505 19089092 23861365 30369010 33405911 47722730 60738020 66811822 95445460 133623644 167029555 334059110 668118220
• Sum of all divisors σ(n): 1754887680
• Sum of proper divisors (its aliquot sum) s(n): 1086769460
• 668118220 is an abundant number, because the sum of its proper divisors (1086769460) is greater than itself. Its abundance is 418651240

Bases of 668118220

• Binary: 100111110100101010110011001100₂
• Hexadecimal: 0x27D2ACCC
• Base-36: B1S3BG

Squares and roots of 668118220

• 668118220 squared (668118220²) is 446381955895968400
• 668118220 cubed (668118220³) is 298235917813332912584248000
• The square root of 668118220 is 25847.9829000251
• The cube root of 668118220 is 874.2140294497

Scales and comparisons

• 668,118,220 seconds is equal to 21 years, 12 weeks, 4 days, 20 hours, 23 minutes, 40 seconds.
• To count from 1 to 668,118,220 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 668118220 cubic inches would be around 72.9 feet tall.

Recreational maths with 668118220

• 668118220 backwards is 022811866
• The number of decimal digits it has is: 9
• The sum of 668118220's digits is 34
• More coming soon!