256624607 has 2 divisors, whose sum is σ = 256624608. Its totient is φ = 256624606.

The previous prime is 256624597. The next prime is 256624649. The reversal of 256624607 is 706426652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256624607 - 2⁸ = 256624351 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 (256624007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128312303 + 128312304.

It is an arithmetic number, because the mean of its divisors is an integer number (128312304).

Almost surely, 2^256624607 is an apocalyptic number.

256624607 is a deficient number, since it is larger than the sum of its proper divisors (1).

256624607 is an equidigital number, since it uses as much as digits as its factorization.

256624607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 256624607 is about 16019.5070773105. The cubic root of 256624607 is about 635.4764085588.

The spelling of 256624607 in words is "two hundred fifty-six million, six hundred twenty-four thousand, six hundred seven".