764649938 has 16 divisors (see below), whose sum is σ = 1241419200. Its totient is φ = 351139536.

The previous prime is 764649917. The next prime is 764649947. The reversal of 764649938 is 839946467.

764649938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68720 + ... + 79067.

It is an arithmetic number, because the mean of its divisors is an integer number (77588700).

Almost surely, 2^764649938 is an apocalyptic number.

764649938 is a deficient number, since it is larger than the sum of its proper divisors (476769262).

764649938 is a wasteful number, since it uses less digits than its factorization.

764649938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148001.

The product of its digits is 7838208, while the sum is 56.

The square root of 764649938 is about 27652.3043886039. The cubic root of 764649938 is about 914.4379033464.

The spelling of 764649938 in words is "seven hundred sixty-four million, six hundred forty-nine thousand, nine hundred thirty-eight".