764320660 has 24 divisors (see below), whose sum is σ = 1605592800. Its totient is φ = 305629344.

The previous prime is 764320651. The next prime is 764320709. The reversal of 764320660 is 66023467.

It is a congruent number.

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, 118191 + ... + 124489.

It is an arithmetic number, because the mean of its divisors is an integer number (66899700).

Almost surely, 2^764320660 is an apocalyptic number.

It is an amenable number.

764320660 is an abundant number, since it is smaller than the sum of its proper divisors (841272140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

764320660 is a wasteful number, since it uses less digits than its factorization.

764320660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12375 (or 12373 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 764320660 is about 27646.3498494828. The cubic root of 764320660 is about 914.3066243125.

The spelling of 764320660 in words is "seven hundred sixty-four million, three hundred twenty thousand, six hundred sixty".