764252406664 has 8 divisors (see below), whose sum is σ = 1432973262510. Its totient is φ = 382126203328.

The previous prime is 764252406653. The next prime is 764252406683. The reversal of 764252406664 is 466604252467.

764252406664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 459833172100 + 304419234564 = 678110^2 + 551742^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47765775409 + ... + 47765775424.

Almost surely, 2^764252406664 is an apocalyptic number.

It is an amenable number.

764252406664 is a deficient number, since it is larger than the sum of its proper divisors (668720855846).

764252406664 is a wasteful number, since it uses less digits than its factorization.

764252406664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95531550839 (or 95531550835 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 52.

The spelling of 764252406664 in words is "seven hundred sixty-four billion, two hundred fifty-two million, four hundred six thousand, six hundred sixty-four".