66421

Names of 66421

• Cardinal: 66421 can be written as Sixty-six thousand, four hundred twenty-one.

Scientific notation

• Scientific notation: 6.6421 × 10⁴

Factors of 66421

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 650

Divisors of 66421

• Number of divisors d(n): 4
• Complete list of divisors:
  1 127 523 66421
• Sum of all divisors σ(n): 67072
• Sum of proper divisors (its aliquot sum) s(n): 651
• 66421 is a deficient number, because the sum of its proper divisors (651) is less than itself. Its deficiency is 65770

Bases of 66421

• Binary: 10000001101110101₂
• Hexadecimal: 0x10375
• Base-36: 1F91

Squares and roots of 66421

• 66421 squared (66421²) is 4411749241
• 66421 cubed (66421³) is 293032796336461
• The square root of 66421 is 257.7227192159
• The cube root of 66421 is 40.4981455229

Scales and comparisons

• 66,421 seconds is equal to 18 hours, 27 minutes, 1 second.
• To count from 1 to 66,421 would take you about eighteen hours.

  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 66421 cubic inches would be around 3.4 feet tall.

Recreational maths with 66421

• 66421 backwards is 12466
• The number of decimal digits it has is: 5
• The sum of 66421's digits is 19
• More coming soon!