764406668 has 12 divisors (see below), whose sum is σ = 1342071192. Its totient is φ = 380957760.

The previous prime is 764406667. The next prime is 764406691. The reversal of 764406668 is 866604467.

It is not an unprimeable number, because it can be changed into a prime (764406667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310013 + ... + 312468.

It is an arithmetic number, because the mean of its divisors is an integer number (111839266).

Almost surely, 2^764406668 is an apocalyptic number.

It is an amenable number.

764406668 is a deficient number, since it is larger than the sum of its proper divisors (577664524).

764406668 is a wasteful number, since it uses less digits than its factorization.

764406668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622792 (or 622790 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 47.

The square root of 764406668 is about 27647.9053094443. The cubic root of 764406668 is about 914.3409182674.

The spelling of 764406668 in words is "seven hundred sixty-four million, four hundred six thousand, six hundred sixty-eight".