6645

Names of 6645

• Cardinal: 6645 can be written as Six thousand, six hundred forty-five.

Scientific notation

• Scientific notation: 6.645 × 10³

Factors of 6645

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 451

Divisors of 6645

• Number of divisors d(n): 8
• Complete list of divisors:
  1 3 5 15 443 1329 2215 6645
• Sum of all divisors σ(n): 10656
• Sum of proper divisors (its aliquot sum) s(n): 4011
• 6645 is a deficient number, because the sum of its proper divisors (4011) is less than itself. Its deficiency is 2634

Bases of 6645

• Binary: 1100111110101₂
• Hexadecimal: 0x19F5
• Base-36: 54L

Squares and roots of 6645

• 6645 squared (6645²) is 44156025
• 6645 cubed (6645³) is 293416786125
• The square root of 6645 is 81.5168694197
• The cube root of 6645 is 18.8003093355

Scales and comparisons

• 6,645 seconds is equal to 1 hour, 50 minutes, 45 seconds.
• To count from 1 to 6,645 would take you about fifty minutes.

  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 6645 cubic inches would be around 1.6 feet tall.

Recreational maths with 6645

• 6645 backwards is 5466
• The number of decimal digits it has is: 4
• The sum of 6645's digits is 21
• More coming soon!