256975859 has 16 divisors (see below), whose sum is σ = 316069056. Its totient is φ = 203904000.

The previous prime is 256975847. The next prime is 256975867. The reversal of 256975859 is 958579652.

It is a cyclic number.

It is not a de Polignac number, because 256975859 - 2⁴ = 256975843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256975889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10442 + ... + 24959.

It is an arithmetic number, because the mean of its divisors is an integer number (19754316).

Almost surely, 2^256975859 is an apocalyptic number.

256975859 is a deficient number, since it is larger than the sum of its proper divisors (59093197).

256975859 is a wasteful number, since it uses less digits than its factorization.

256975859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35486.

The product of its digits is 6804000, while the sum is 56.

The square root of 256975859 is about 16030.4665870960. The cubic root of 256975859 is about 635.7662100703.

The spelling of 256975859 in words is "two hundred fifty-six million, nine hundred seventy-five thousand, eight hundred fifty-nine".