256706711 has 4 divisors (see below), whose sum is σ = 256759752. Its totient is φ = 256653672.

The previous prime is 256706687. The next prime is 256706713. The reversal of 256706711 is 117607652.

256706711 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256706711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256706713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18440 + ... + 29213.

It is an arithmetic number, because the mean of its divisors is an integer number (64189938).

Almost surely, 2^256706711 is an apocalyptic number.

256706711 is a deficient number, since it is larger than the sum of its proper divisors (53041).

256706711 is an equidigital number, since it uses as much as digits as its factorization.

256706711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53040.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 256706711 is about 16022.0694980393. The cubic root of 256706711 is about 635.5441723797.

The spelling of 256706711 in words is "two hundred fifty-six million, seven hundred six thousand, seven hundred eleven".