256966027 has 2 divisors, whose sum is σ = 256966028. Its totient is φ = 256966026.

The previous prime is 256966007. The next prime is 256966081. The reversal of 256966027 is 720669652.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 256966027 - 2¹⁹ = 256441739 is a prime.

It is not a weakly prime, because it can be changed into another prime (256966007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128483013 + 128483014.

It is an arithmetic number, because the mean of its divisors is an integer number (128483014).

Almost surely, 2^256966027 is an apocalyptic number.

256966027 is a deficient number, since it is larger than the sum of its proper divisors (1).

256966027 is an equidigital number, since it uses as much as digits as its factorization.

256966027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 256966027 is about 16030.1599181044. The cubic root of 256966027 is about 635.7581017431.

The spelling of 256966027 in words is "two hundred fifty-six million, nine hundred sixty-six thousand, twenty-seven".