256034761 has 2 divisors, whose sum is σ = 256034762. Its totient is φ = 256034760.

The previous prime is 256034741. The next prime is 256034767. The reversal of 256034761 is 167430652.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172659600 + 83375161 = 13140^2 + 9131^2 .

It is a cyclic number.

It is not a de Polignac number, because 256034761 - 2⁵ = 256034729 is a prime.

It is not a weakly prime, because it can be changed into another prime (256034767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128017380 + 128017381.

It is an arithmetic number, because the mean of its divisors is an integer number (128017381).

Almost surely, 2^256034761 is an apocalyptic number.

It is an amenable number.

256034761 is a deficient number, since it is larger than the sum of its proper divisors (1).

256034761 is an equidigital number, since it uses as much as digits as its factorization.

256034761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 256034761 is about 16001.0862443773. The cubic root of 256034761 is about 634.9891588866.

The spelling of 256034761 in words is "two hundred fifty-six million, thirty-four thousand, seven hundred sixty-one".