655912 has 16 divisors (see below), whose sum is σ = 1239840. Its totient is φ = 325296.

The previous prime is 655909. The next prime is 655913. The reversal of 655912 is 219556.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (655913) 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 in 3 ways as a sum of consecutive naturals, for example, 1053 + ... + 1555.

It is an arithmetic number, because the mean of its divisors is an integer number (77490).

2⁶⁵⁵⁹¹² is an apocalyptic number.

It is an amenable number.

655912 is a deficient number, since it is larger than the sum of its proper divisors (583928).

655912 is a wasteful number, since it uses less digits than its factorization.

655912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672 (or 668 counting only the distinct ones).

The product of its digits is 2700, while the sum is 28.

The square root of 655912 is about 809.8839423028. The cubic root of 655912 is about 86.8857442330.

The spelling of 655912 in words is "six hundred fifty-five thousand, nine hundred twelve".