77960992 has 24 divisors (see below), whose sum is σ = 155433600. Its totient is φ = 38485824.

The previous prime is 77960983. The next prime is 77961029. The reversal of 77960992 is 29906977.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

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, 12892 + ... + 17947.

It is an arithmetic number, because the mean of its divisors is an integer number (6476400).

Almost surely, 2^77960992 is an apocalyptic number.

It is an amenable number.

77960992 is a deficient number, since it is larger than the sum of its proper divisors (77472608).

77960992 is a wasteful number, since it uses less digits than its factorization.

77960992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30928 (or 30920 counting only the distinct ones).

The product of its (nonzero) digits is 428652, while the sum is 49.

The square root of 77960992 is about 8829.5521970256. The cubic root of 77960992 is about 427.1946307077.

The spelling of 77960992 in words is "seventy-seven million, nine hundred sixty thousand, nine hundred ninety-two".