640069

Names of 640069

• Cardinal: 640069 can be written as Six hundred forty thousand and sixty-nine.

Scientific notation

• Scientific notation: 6.40069 × 10⁵

Factors of 640069

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 640069

Divisors of 640069

• Number of divisors d(n): 2
• Complete list of divisors:
  1 640069
• Sum of all divisors σ(n): 640070
• Sum of proper divisors (its aliquot sum) s(n): 1
• 640069 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 640068

Bases of 640069

• Binary: 10011100010001000101₂
• Hexadecimal: 0x9C445
• Base-36: DPVP

Squares and roots of 640069

• 640069 squared (640069²) is 409688324761
• 640069 cubed (640069³) is 262228796341448509
• The square root of 640069 is 800.0431238379
• The cube root of 640069 is 86.1804844899

Scales and comparisons

• 640,069 seconds is equal to 1 week, 9 hours, 47 minutes, 49 seconds.
• To count from 1 to 640,069 would take you about nine 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 640069 cubic inches would be around 7.2 feet tall.

Recreational maths with 640069

• 640069 backwards is 960046
• The number of decimal digits it has is: 6
• The sum of 640069's digits is 25
• More coming soon!