66997486720

Names of 66997486720

• Cardinal: 66997486720 can be written as Sixty-six billion, nine hundred ninety-seven million, four hundred eighty-six thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 6.699748672 × 10¹⁰

Factors of 66997486720

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 20561

Divisors of 66997486720

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 5 8 10 16 20 32 40 64 80 128 160 320 640 9311 11243 18622 22486 37244 44972 46555 56215 74488 89944 93110 112430 148976 179888 186220 224860 297952 359776 372440 449720 595904 719552 744880 899440 1191808 1439104 1489760 1798880 2979520 3597760 5959040 7195520 104683573 209367146 418734292 523417865 837468584 1046835730 1674937168 2093671460 3349874336 4187342920 6699748672 8374685840 13399497344 16749371680 33498743360 66997486720
• Sum of all divisors σ(n): 160197315840
• Sum of proper divisors (its aliquot sum) s(n): 93199829120
• 66997486720 is an abundant number, because the sum of its proper divisors (93199829120) is greater than itself. Its abundance is 26202342400

Bases of 66997486720

• Binary: 111110011001010111001000010010000000₂
• Hexadecimal: 0xF995C8480
• Base-36: US0KNLS

Squares and roots of 66997486720

• 66997486720 squared (66997486720²) is 4488663226796576358400
• 66997486720 cubed (66997486720³) is 300729154927855972713369960448000
• The square root of 66997486720 is 258838.7272415007
• The cube root of 66997486720 is 4061.4973146981

Scales and comparisons

• 66,997,486,720 seconds is equal to 2,130 years, 16 weeks, 1 day, 20 hours, 58 minutes, 40 seconds.
• To count from 1 to 66,997,486,720 would take you about four thousand, two hundred sixty 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 66997486720 cubic inches would be around 338.5 feet tall.

Recreational maths with 66997486720

• 66997486720 backwards is 02768479966
• 66997486720 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 66997486720's digits is 64
• More coming soon!