77368880 has 20 divisors (see below), whose sum is σ = 179882832. Its totient is φ = 30947520.

The previous prime is 77368877. The next prime is 77368891. The reversal of 77368880 is 8886377.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

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, 483476 + ... + 483635.

Almost surely, 2^77368880 is an apocalyptic number.

It is an amenable number.

77368880 is an abundant number, since it is smaller than the sum of its proper divisors (102513952).

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

77368880 is a wasteful number, since it uses less digits than its factorization.

77368880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967124 (or 967118 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 77368880 is about 8795.9581627018. The cubic root of 77368880 is about 426.1103698390.

The spelling of 77368880 in words is "seventy-seven million, three hundred sixty-eight thousand, eight hundred eighty".