256674167 has 2 divisors, whose sum is σ = 256674168. Its totient is φ = 256674166.

The previous prime is 256674149. The next prime is 256674233. The reversal of 256674167 is 761476652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256674167 - 2¹⁰ = 256673143 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256674107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128337083 + 128337084.

It is an arithmetic number, because the mean of its divisors is an integer number (128337084).

Almost surely, 2^256674167 is an apocalyptic number.

256674167 is a deficient number, since it is larger than the sum of its proper divisors (1).

256674167 is an equidigital number, since it uses as much as digits as its factorization.

256674167 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 44.

The square root of 256674167 is about 16021.0538667093. The cubic root of 256674167 is about 635.5173142017.

The spelling of 256674167 in words is "two hundred fifty-six million, six hundred seventy-four thousand, one hundred sixty-seven".