256454867 has 4 divisors (see below), whose sum is σ = 256590840. Its totient is φ = 256318896.

The previous prime is 256454851. The next prime is 256454893. The reversal of 256454867 is 768454652.

256454867 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 not a de Polignac number, because 256454867 - 2⁴ = 256454851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256454827) 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, 65117 + ... + 68942.

It is an arithmetic number, because the mean of its divisors is an integer number (64147710).

Almost surely, 2^256454867 is an apocalyptic number.

256454867 is a deficient number, since it is larger than the sum of its proper divisors (135973).

256454867 is a wasteful number, since it uses less digits than its factorization.

256454867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135972.

The product of its digits is 1612800, while the sum is 47.

The square root of 256454867 is about 16014.2082851448. The cubic root of 256454867 is about 635.3362692874.

The spelling of 256454867 in words is "two hundred fifty-six million, four hundred fifty-four thousand, eight hundred sixty-seven".