77664308 has 12 divisors (see below), whose sum is σ = 136090752. Its totient is φ = 38781240.

The previous prime is 77664281. The next prime is 77664317. The reversal of 77664308 is 80346677.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9188 + ... + 15483.

It is an arithmetic number, because the mean of its divisors is an integer number (11340896).

Almost surely, 2^77664308 is an apocalyptic number.

It is an amenable number.

77664308 is a deficient number, since it is larger than the sum of its proper divisors (58426444).

77664308 is a wasteful number, since it uses less digits than its factorization.

77664308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25462 (or 25460 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 77664308 is about 8812.7355571355. The cubic root of 77664308 is about 426.6520391578.

The spelling of 77664308 in words is "seventy-seven million, six hundred sixty-four thousand, three hundred eight".