77616764 has 12 divisors (see below), whose sum is σ = 143819424. Its totient is φ = 36525504.

The previous prime is 77616733. The next prime is 77616779. The reversal of 77616764 is 46761677.

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, 570644 + ... + 570779.

It is an arithmetic number, because the mean of its divisors is an integer number (11984952).

Almost surely, 2^77616764 is an apocalyptic number.

It is an amenable number.

77616764 is a deficient number, since it is larger than the sum of its proper divisors (66202660).

77616764 is a wasteful number, since it uses less digits than its factorization.

77616764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141444 (or 1141442 counting only the distinct ones).

The product of its digits is 296352, while the sum is 44.

The square root of 77616764 is about 8810.0376843689. The cubic root of 77616764 is about 426.5649597527.

The spelling of 77616764 in words is "seventy-seven million, six hundred sixteen thousand, seven hundred sixty-four".