77008664 has 16 divisors (see below), whose sum is σ = 145200600. Its totient is φ = 38288512.

The previous prime is 77008663. The next prime is 77008693. The reversal of 77008664 is 46680077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77008663) 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, 25457 + ... + 28320.

Almost surely, 2^77008664 is an apocalyptic number.

It is an amenable number.

77008664 is a deficient number, since it is larger than the sum of its proper divisors (68191936).

77008664 is a wasteful number, since it uses less digits than its factorization.

77008664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53962 (or 53958 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 77008664 is about 8775.4580507231. The cubic root of 77008664 is about 425.4480423789.

The spelling of 77008664 in words is "seventy-seven million, eight thousand, six hundred sixty-four".