255632646 has 16 divisors (see below), whose sum is σ = 511935984. Its totient is φ = 85099104.

The previous prime is 255632623. The next prime is 255632677. The reversal of 255632646 is 646236552.

255632646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×255632646² = 130696099401922632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22921 + ... + 32196.

It is an arithmetic number, because the mean of its divisors is an integer number (31995999).

Almost surely, 2^255632646 is an apocalyptic number.

255632646 is an abundant number, since it is smaller than the sum of its proper divisors (256303338).

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

255632646 is a wasteful number, since it uses less digits than its factorization.

255632646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55895.

The product of its digits is 259200, while the sum is 39.

The square root of 255632646 is about 15988.5160662270. The cubic root of 255632646 is about 634.6565576214.

The spelling of 255632646 in words is "two hundred fifty-five million, six hundred thirty-two thousand, six hundred forty-six".