77486664 has 32 divisors (see below), whose sum is σ = 194886720. Its totient is φ = 25672896.

The previous prime is 77486659. The next prime is 77486681. The reversal of 77486664 is 46668477.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5659 + ... + 13674.

It is an arithmetic number, because the mean of its divisors is an integer number (6090210).

Almost surely, 2^77486664 is an apocalyptic number.

It is an amenable number.

77486664 is an abundant number, since it is smaller than the sum of its proper divisors (117400056).

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

77486664 is a wasteful number, since it uses less digits than its factorization.

77486664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19509 (or 19505 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 48.

The square root of 77486664 is about 8802.6509643402. The cubic root of 77486664 is about 426.3264926375.

The spelling of 77486664 in words is "seventy-seven million, four hundred eighty-six thousand, six hundred sixty-four".