77384864 has 24 divisors (see below), whose sum is σ = 155897280. Its totient is φ = 37791936.

The previous prime is 77384851. The next prime is 77384869. The reversal of 77384864 is 46848377.

It is not an unprimeable number, because it can be changed into a prime (77384869) 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, 26744 + ... + 29495.

It is an arithmetic number, because the mean of its divisors is an integer number (6495720).

Almost surely, 2^77384864 is an apocalyptic number.

It is an amenable number.

77384864 is an abundant number, since it is smaller than the sum of its proper divisors (78512416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77384864 is a wasteful number, since it uses less digits than its factorization.

77384864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56292 (or 56284 counting only the distinct ones).

The product of its digits is 903168, while the sum is 47.

The square root of 77384864 is about 8796.8667149162. The cubic root of 77384864 is about 426.1397118654.

The spelling of 77384864 in words is "seventy-seven million, three hundred eighty-four thousand, eight hundred sixty-four".