256374671 has 16 divisors (see below), whose sum is σ = 314173440. Its totient is φ = 204197760.

The previous prime is 256374653. The next prime is 256374689. The reversal of 256374671 is 176473652.

It is an interprime number because it is at equal distance from previous prime (256374653) and next prime (256374689).

It is a cyclic number.

It is not a de Polignac number, because 256374671 - 2⁶ = 256374607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256374631) 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, 4235 + ... + 23036.

It is an arithmetic number, because the mean of its divisors is an integer number (19635840).

Almost surely, 2^256374671 is an apocalyptic number.

256374671 is a deficient number, since it is larger than the sum of its proper divisors (57798769).

256374671 is a wasteful number, since it uses less digits than its factorization.

256374671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27374.

The product of its digits is 211680, while the sum is 41.

The square root of 256374671 is about 16011.7041878746. The cubic root of 256374671 is about 635.2700370494.

The spelling of 256374671 in words is "two hundred fifty-six million, three hundred seventy-four thousand, six hundred seventy-one".