256622670 has 48 divisors (see below), whose sum is σ = 668099952. Its totient is φ = 68342400.

The previous prime is 256622659. The next prime is 256622671. The reversal of 256622670 is 76226652.

256622670 is a `hidden beast` number, since 2 + 566 + 2 + 26 + 70 = 666.

256622670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256622671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93234 + ... + 95946.

It is an arithmetic number, because the mean of its divisors is an integer number (13918749).

Almost surely, 2^256622670 is an apocalyptic number.

256622670 is an abundant number, since it is smaller than the sum of its proper divisors (411477282).

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

256622670 is a wasteful number, since it uses less digits than its factorization.

256622670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3777 (or 3774 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 256622670 is about 16019.4466196557. The cubic root of 256622670 is about 635.4748096982.

The spelling of 256622670 in words is "two hundred fifty-six million, six hundred twenty-two thousand, six hundred seventy".