764999317 has 4 divisors (see below), whose sum is σ = 765598720. Its totient is φ = 764399916.

The previous prime is 764999293. The next prime is 764999357. The reversal of 764999317 is 713999467.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 713999467 = 2179 ⋅327673.

It is a cyclic number.

It is not a de Polignac number, because 764999317 - 2⁷ = 764999189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764999357) 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 in 3 ways as a sum of consecutive naturals, for example, 297783 + ... + 300340.

It is an arithmetic number, because the mean of its divisors is an integer number (191399680).

Almost surely, 2^764999317 is an apocalyptic number.

It is an amenable number.

764999317 is a deficient number, since it is larger than the sum of its proper divisors (599403).

764999317 is a wasteful number, since it uses less digits than its factorization.

764999317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599402.

The product of its digits is 2571912, while the sum is 55.

The square root of 764999317 is about 27658.6210249173. The cubic root of 764999317 is about 914.5771551956.

The spelling of 764999317 in words is "seven hundred sixty-four million, nine hundred ninety-nine thousand, three hundred seventeen".