656808 has 16 divisors (see below), whose sum is σ = 1642080. Its totient is φ = 218928.

The previous prime is 656791. The next prime is 656809. The reversal of 656808 is 808656.

It is not an unprimeable number, because it can be changed into a prime (656809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13660 + ... + 13707.

It is an arithmetic number, because the mean of its divisors is an integer number (102630).

2⁶⁵⁶⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

656808 is an abundant number, since it is smaller than the sum of its proper divisors (985272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

656808 is a wasteful number, since it uses less digits than its factorization.

656808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27376 (or 27372 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 656808 is about 810.4369191985. The cubic root of 656808 is about 86.9252892762.

The spelling of 656808 in words is "six hundred fifty-six thousand, eight hundred eight".