764767745 has 24 divisors (see below), whose sum is σ = 1072215144. Its totient is φ = 522122496.

The previous prime is 764767723. The next prime is 764767753. The reversal of 764767745 is 547767467.

It can be written as a sum of positive squares in 4 ways, for example, as 14500864 + 750266881 = 3808^2 + 27391^2 .

It is not a de Polignac number, because 764767745 - 2²⁶ = 697658881 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50387 + ... + 63783.

It is an arithmetic number, because the mean of its divisors is an integer number (44675631).

Almost surely, 2^764767745 is an apocalyptic number.

It is an amenable number.

764767745 is a deficient number, since it is larger than the sum of its proper divisors (307447399).

764767745 is a wasteful number, since it uses less digits than its factorization.

764767745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13649 (or 13642 counting only the distinct ones).

The product of its digits is 6914880, while the sum is 53.

The square root of 764767745 is about 27654.4344545319. The cubic root of 764767745 is about 914.4848623747.

The spelling of 764767745 in words is "seven hundred sixty-four million, seven hundred sixty-seven thousand, seven hundred forty-five".