655996 has 24 divisors (see below), whose sum is σ = 1327536. Its totient is φ = 280320.

The previous prime is 655987. The next prime is 656023. The reversal of 655996 is 699556.

It is a congruent number.

It is an unprimeable number.

655996 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 7 ways as a sum of consecutive naturals, for example, 310 + ... + 1186.

It is an arithmetic number, because the mean of its divisors is an integer number (55314).

2⁶⁵⁵⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

655996 is an abundant number, since it is smaller than the sum of its proper divisors (671540).

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

655996 is a wasteful number, since it uses less digits than its factorization.

655996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909 (or 907 counting only the distinct ones).

The product of its digits is 72900, while the sum is 40.

The square root of 655996 is about 809.9357999249. The cubic root of 655996 is about 86.8894531101.

The spelling of 655996 in words is "six hundred fifty-five thousand, nine hundred ninety-six".