77646364 has 6 divisors (see below), whose sum is σ = 135881144. Its totient is φ = 38823180.

The previous prime is 77646353. The next prime is 77646383. The reversal of 77646364 is 46364677.

It is a self number, because there is not a number n which added to its sum of digits gives 77646364.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9705792 + ... + 9705799.

Almost surely, 2^77646364 is an apocalyptic number.

It is an amenable number.

77646364 is a deficient number, since it is larger than the sum of its proper divisors (58234780).

77646364 is a wasteful number, since it uses less digits than its factorization.

77646364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19411595 (or 19411593 counting only the distinct ones).

The product of its digits is 508032, while the sum is 43.

The square root of 77646364 is about 8811.7174262456. The cubic root of 77646364 is about 426.6191779286.

The spelling of 77646364 in words is "seventy-seven million, six hundred forty-six thousand, three hundred sixty-four".