77216504 has 8 divisors (see below), whose sum is σ = 144780960. Its totient is φ = 38608248.

The previous prime is 77216501. The next prime is 77216539. The reversal of 77216504 is 40561277.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77216501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4826024 + ... + 4826039.

It is an arithmetic number, because the mean of its divisors is an integer number (18097620).

Almost surely, 2^77216504 is an apocalyptic number.

It is an amenable number.

77216504 is a deficient number, since it is larger than the sum of its proper divisors (67564456).

77216504 is a wasteful number, since it uses less digits than its factorization.

77216504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9652069 (or 9652065 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 77216504 is about 8787.2921881544. The cubic root of 77216504 is about 425.8304482231.

The spelling of 77216504 in words is "seventy-seven million, two hundred sixteen thousand, five hundred four".