77964918 has 16 divisors (see below), whose sum is σ = 156083760. Its totient is φ = 25962656.

The previous prime is 77964889. The next prime is 77964937. The reversal of 77964918 is 81946977.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 796 + ... + 12512.

It is an arithmetic number, because the mean of its divisors is an integer number (9755235).

Almost surely, 2^77964918 is an apocalyptic number.

77964918 is an abundant number, since it is smaller than the sum of its proper divisors (78118842).

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

77964918 is a wasteful number, since it uses less digits than its factorization.

77964918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12831.

The product of its digits is 762048, while the sum is 51.

The square root of 77964918 is about 8829.7745158073. The cubic root of 77964918 is about 427.2018015501.

The spelling of 77964918 in words is "seventy-seven million, nine hundred sixty-four thousand, nine hundred eighteen".