256596071 has 2 divisors, whose sum is σ = 256596072. Its totient is φ = 256596070.

The previous prime is 256596047. The next prime is 256596091. The reversal of 256596071 is 170695652.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-256596071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (256596091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128298035 + 128298036.

It is an arithmetic number, because the mean of its divisors is an integer number (128298036).

Almost surely, 2^256596071 is an apocalyptic number.

256596071 is a deficient number, since it is larger than the sum of its proper divisors (1).

256596071 is an equidigital number, since it uses as much as digits as its factorization.

256596071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 256596071 is about 16018.6163884400. The cubic root of 256596071 is about 635.4528532352.

The spelling of 256596071 in words is "two hundred fifty-six million, five hundred ninety-six thousand, seventy-one".