655868 has 12 divisors (see below), whose sum is σ = 1197840. Its totient is φ = 313632.

The previous prime is 655859. The next prime is 655883. The reversal of 655868 is 868556.

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 655868.

It is an unprimeable number.

655868 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3473 + ... + 3656.

It is an arithmetic number, because the mean of its divisors is an integer number (99820).

2⁶⁵⁵⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

655868 is a deficient number, since it is larger than the sum of its proper divisors (541972).

655868 is a wasteful number, since it uses less digits than its factorization.

655868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7156 (or 7154 counting only the distinct ones).

The product of its digits is 57600, while the sum is 38.

The square root of 655868 is about 809.8567774613. The cubic root of 655868 is about 86.8838013615.

The spelling of 655868 in words is "six hundred fifty-five thousand, eight hundred sixty-eight".