256204671 has 16 divisors (see below), whose sum is σ = 362097504. Its totient is φ = 160579584.

The previous prime is 256204667. The next prime is 256204679. The reversal of 256204671 is 176402652.

It is not a de Polignac number, because 256204671 - 2² = 256204667 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256204679) 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, 56625 + ... + 60981.

It is an arithmetic number, because the mean of its divisors is an integer number (22631094).

Almost surely, 2^256204671 is an apocalyptic number.

256204671 is a deficient number, since it is larger than the sum of its proper divisors (105892833).

256204671 is a wasteful number, since it uses less digits than its factorization.

256204671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5530.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 256204671 is about 16006.3946908728. The cubic root of 256204671 is about 635.1295918368.

The spelling of 256204671 in words is "two hundred fifty-six million, two hundred four thousand, six hundred seventy-one".