77916464 has 20 divisors (see below), whose sum is σ = 151102680. Its totient is φ = 38922240.

The previous prime is 77916463. The next prime is 77916467. The reversal of 77916464 is 46461977.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (77916463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27632 + ... + 30320.

It is an arithmetic number, because the mean of its divisors is an integer number (7555134).

Almost surely, 2^77916464 is an apocalyptic number.

It is an amenable number.

77916464 is a deficient number, since it is larger than the sum of its proper divisors (73186216).

77916464 is a wasteful number, since it uses less digits than its factorization.

77916464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4508 (or 4502 counting only the distinct ones).

The product of its digits is 254016, while the sum is 44.

The square root of 77916464 is about 8827.0303046948. The cubic root of 77916464 is about 427.1132834223.

The spelling of 77916464 in words is "seventy-seven million, nine hundred sixteen thousand, four hundred sixty-four".