77864368 has 20 divisors (see below), whose sum is σ = 152249680. Its totient is φ = 38574144.

The previous prime is 77864363. The next prime is 77864389. The reversal of 77864368 is 86346877.

It is not an unprimeable number, because it can be changed into a prime (77864363) 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, 20580 + ... + 24067.

It is an arithmetic number, because the mean of its divisors is an integer number (7612484).

Almost surely, 2^77864368 is an apocalyptic number.

It is an amenable number.

77864368 is a deficient number, since it is larger than the sum of its proper divisors (74385312).

77864368 is a wasteful number, since it uses less digits than its factorization.

77864368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44764 (or 44758 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 49.

The square root of 77864368 is about 8824.0788754408. The cubic root of 77864368 is about 427.0180709627.

The spelling of 77864368 in words is "seventy-seven million, eight hundred sixty-four thousand, three hundred sixty-eight".