668255 has 16 divisors (see below), whose sum is σ = 934464. Its totient is φ = 449280.

The previous prime is 668243. The next prime is 668273. The reversal of 668255 is 552866.

It is a happy number.

It is not a de Polignac number, because 668255 - 2⁸ = 667999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 668255.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1979 + ... + 2291.

It is an arithmetic number, because the mean of its divisors is an integer number (58404).

2⁶⁶⁸²⁵⁵ is an apocalyptic number.

668255 is a deficient number, since it is larger than the sum of its proper divisors (266209).

668255 is a wasteful number, since it uses less digits than its factorization.

668255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386.

The product of its digits is 14400, while the sum is 32.

The square root of 668255 is about 817.4686538333. The cubic root of 668255 is about 87.4273682982.

The spelling of 668255 in words is "six hundred sixty-eight thousand, two hundred fifty-five".