256750697 has 16 divisors (see below), whose sum is σ = 298598400. Its totient is φ = 216217680.

The previous prime is 256750657. The next prime is 256750729. The reversal of 256750697 is 796057652.

It is not a de Polignac number, because 256750697 - 2²⁰ = 255702121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256750607) 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, 177704 + ... + 179142.

It is an arithmetic number, because the mean of its divisors is an integer number (18662400).

Almost surely, 2^256750697 is an apocalyptic number.

It is an amenable number.

256750697 is a deficient number, since it is larger than the sum of its proper divisors (41847703).

256750697 is a wasteful number, since it uses less digits than its factorization.

256750697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876.

The product of its (nonzero) digits is 793800, while the sum is 47.

The square root of 256750697 is about 16023.4421083611. The cubic root of 256750697 is about 635.5804698978.

The spelling of 256750697 in words is "two hundred fifty-six million, seven hundred fifty thousand, six hundred ninety-seven".