655808 has 14 divisors (see below), whose sum is σ = 1301496. Its totient is φ = 327872.

The previous prime is 655807. The next prime is 655847. The reversal of 655808 is 808556.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060 + ... + 5187.

It is an arithmetic number, because the mean of its divisors is an integer number (92964).

2⁶⁵⁵⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

655808 is a deficient number, since it is larger than the sum of its proper divisors (645688).

655808 is a wasteful number, since it uses less digits than its factorization.

655808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10259 (or 10249 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 655808 is about 809.8197330270. The cubic root of 655808 is about 86.8811518512.

The spelling of 655808 in words is "six hundred fifty-five thousand, eight hundred eight".