655904 has 24 divisors (see below), whose sum is σ = 1310400. Its totient is φ = 323136.

The previous prime is 655901. The next prime is 655909. The reversal of 655904 is 409556.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 655904.

It is not an unprimeable number, because it can be changed into a prime (655901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3197 + ... + 3395.

It is an arithmetic number, because the mean of its divisors is an integer number (54600).

2⁶⁵⁵⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

655904 is a deficient number, since it is larger than the sum of its proper divisors (654496).

655904 is a wasteful number, since it uses less digits than its factorization.

655904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 655904 is about 809.8790033085. The cubic root of 655904 is about 86.8853909901.

The spelling of 655904 in words is "six hundred fifty-five thousand, nine hundred four".