6445

Names of 6445

• Cardinal: 6445 can be written as Six thousand, four hundred forty-five.

Scientific notation

• Scientific notation: 6.445 × 10³

Factors of 6445

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 1294

Divisors of 6445

• Number of divisors d(n): 4
• Complete list of divisors:
  1 5 1289 6445
• Sum of all divisors σ(n): 7740
• Sum of proper divisors (its aliquot sum) s(n): 1295
• 6445 is a deficient number, because the sum of its proper divisors (1295) is less than itself. Its deficiency is 5150

Bases of 6445

• Binary: 1100100101101₂
• Hexadecimal: 0x192D
• Base-36: 4Z1

Squares and roots of 6445

• 6445 squared (6445²) is 41538025
• 6445 cubed (6445³) is 267712571125
• The square root of 6445 is 80.2807573457
• The cube root of 6445 is 18.6097686383

Scales and comparisons

• 6,445 seconds is equal to 1 hour, 47 minutes, 25 seconds.
• To count from 1 to 6,445 would take you about forty-seven 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 6445 cubic inches would be around 1.6 feet tall.

Recreational maths with 6445

• 6445 backwards is 5446
• The number of decimal digits it has is: 4
• The sum of 6445's digits is 19
• More coming soon!