764973729 has 24 divisors (see below), whose sum is σ = 1192726080. Its totient is φ = 469658592.

The previous prime is 764973707. The next prime is 764973731. The reversal of 764973729 is 927379467.

It is not a de Polignac number, because 764973729 - 2¹¹ = 764971681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (764973749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44452 + ... + 59210.

It is an arithmetic number, because the mean of its divisors is an integer number (49696920).

Almost surely, 2^764973729 is an apocalyptic number.

It is an amenable number.

764973729 is a deficient number, since it is larger than the sum of its proper divisors (427752351).

764973729 is a wasteful number, since it uses less digits than its factorization.

764973729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15221 (or 15218 counting only the distinct ones).

The product of its digits is 4000752, while the sum is 54.

The square root of 764973729 is about 27658.1584527965. The cubic root of 764973729 is about 914.5669580356.

The spelling of 764973729 in words is "seven hundred sixty-four million, nine hundred seventy-three thousand, seven hundred twenty-nine".