764344057 has 2 divisors, whose sum is σ = 764344058. Its totient is φ = 764344056.

The previous prime is 764344019. The next prime is 764344067. The reversal of 764344057 is 750443467.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 561879616 + 202464441 = 23704^2 + 14229^2 .

It is a cyclic number.

It is not a de Polignac number, because 764344057 - 2¹⁹ = 763819769 is a prime.

It is not a weakly prime, because it can be changed into another prime (764344067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382172028 + 382172029.

It is an arithmetic number, because the mean of its divisors is an integer number (382172029).

Almost surely, 2^764344057 is an apocalyptic number.

It is an amenable number.

764344057 is a deficient number, since it is larger than the sum of its proper divisors (1).

764344057 is an equidigital number, since it uses as much as digits as its factorization.

764344057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 40.

The square root of 764344057 is about 27646.7729943297. The cubic root of 764344057 is about 914.3159536490.

The spelling of 764344057 in words is "seven hundred sixty-four million, three hundred forty-four thousand, fifty-seven".