764699385 has 16 divisors (see below), whose sum is σ = 1233156096. Its totient is φ = 404627328.

The previous prime is 764699371. The next prime is 764699437. The reversal of 764699385 is 583996467.

It is a happy number.

It is not a de Polignac number, because 764699385 - 2⁸ = 764699129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198804 + ... + 202613.

It is an arithmetic number, because the mean of its divisors is an integer number (77072256).

Almost surely, 2^764699385 is an apocalyptic number.

It is an amenable number.

764699385 is a deficient number, since it is larger than the sum of its proper divisors (468456711).

764699385 is a wasteful number, since it uses less digits than its factorization.

764699385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401552.

The product of its digits is 9797760, while the sum is 57.

The square root of 764699385 is about 27653.1984587678. The cubic root of 764699385 is about 914.4576139940.

The spelling of 764699385 in words is "seven hundred sixty-four million, six hundred ninety-nine thousand, three hundred eighty-five".