About the Number 665 (six hundred sixty-five)

According to Maps.Google.com, the driving distance between Green Bay, WI, and Pittsburgh, PA, is 665 miles.

   MathBabbler Number Analyst (MBNA) output:
   =========================================
   665 is a natural, whole, integer
   665 is odd
   665 proper divisors are: 1,5,7,19,35,95,133,
   665 is deficient (sum of divisors is 295)
   665 is happy
   665 is not a Harshad number
   665 is not prime
   665 has the prime factors: 5*7*19 (sum=31)
   665 is sphenic (had 3 unique prime factors)
   665 sum of prime factors is: 31
   665 in octal is 01231
   665 in hexadecimal is 0x299
   665 in binary is 1010011001 (is odious)
   665 nearest square numbers: -40...11 (625...676 [26])
   sqrt(665) = 25.7876
   ln(665) = 6.49979
   log(665) = 2.82282
   665 reciprocal is .00150375939849624060150375939849
   665! is 1.51747e+1590
   665 is 211.676 Pi years
   665 is 33 score and 5 years
   665 written as a Roman numeral is DCLXV
   665 = 333^2 - 332^2 and 333 + 332 = 665

log(665) = 2.71062, which when rounded to the nearest hundredth equals e (2.7182818284590) truncated to two decimal digits.


Creator: Gerald Thurman [gthurman@gmail.com]
Created: 25 January 2011 (posted 31 January 2011)

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This work is licensed under a Creative Commons Attribution 3.0 United States License.