7904456664 has 32 divisors (see below), whose sum is σ = 21281230320. Its totient is φ = 2432140416.

The previous prime is 7904456633. The next prime is 7904456687. The reversal of 7904456664 is 4666544097.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12667087 + ... + 12667710.

Almost surely, 2^7904456664 is an apocalyptic number.

It is an amenable number.

7904456664 is an abundant number, since it is smaller than the sum of its proper divisors (13376773656).

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

7904456664 is a wasteful number, since it uses less digits than its factorization.

7904456664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25334819 (or 25334815 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 51.

The square root of 7904456664 is about 88907.0113320654. The cubic root of 7904456664 is about 1992.0061470593.

The spelling of 7904456664 in words is "seven billion, nine hundred four million, four hundred fifty-six thousand, six hundred sixty-four".