256674117 has 16 divisors (see below), whose sum is σ = 391486592. Its totient is φ = 146534400.

The previous prime is 256674113. The next prime is 256674133. The reversal of 256674117 is 711476652.

It is not a de Polignac number, because 256674117 - 2² = 256674113 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256674113) 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 15 ways as a sum of consecutive naturals, for example, 20133 + ... + 30309.

It is an arithmetic number, because the mean of its divisors is an integer number (24467912).

Almost surely, 2^256674117 is an apocalyptic number.

It is an amenable number.

256674117 is a deficient number, since it is larger than the sum of its proper divisors (134812475).

256674117 is a wasteful number, since it uses less digits than its factorization.

256674117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11388.

The product of its digits is 70560, while the sum is 39.

The square root of 256674117 is about 16021.0523062625. The cubic root of 256674117 is about 635.5172729355.

The spelling of 256674117 in words is "two hundred fifty-six million, six hundred seventy-four thousand, one hundred seventeen".