256704795 has 40 divisors (see below), whose sum is σ = 462868560. Its totient is φ = 136105920.

The previous prime is 256704793. The next prime is 256704803. The reversal of 256704795 is 597407652.

It is not a de Polignac number, because 256704795 - 2¹ = 256704793 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 256704795.

It is not an unprimeable number, because it can be changed into a prime (256704793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 70725 + ... + 74265.

It is an arithmetic number, because the mean of its divisors is an integer number (11571714).

Almost surely, 2^256704795 is an apocalyptic number.

256704795 is a deficient number, since it is larger than the sum of its proper divisors (206163765).

256704795 is a wasteful number, since it uses less digits than its factorization.

256704795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3737 (or 3728 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The square root of 256704795 is about 16022.0097054021. The cubic root of 256704795 is about 635.5425911905.

The spelling of 256704795 in words is "two hundred fifty-six million, seven hundred four thousand, seven hundred ninety-five".