77790996 has 48 divisors (see below), whose sum is σ = 202171200. Its totient is φ = 25867296.

The previous prime is 77790971. The next prime is 77791027. The reversal of 77790996 is 69909777.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70626 + ... + 71718.

It is an arithmetic number, because the mean of its divisors is an integer number (4211900).

Almost surely, 2^77790996 is an apocalyptic number.

It is an amenable number.

77790996 is an abundant number, since it is smaller than the sum of its proper divisors (124380204).

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

77790996 is a wasteful number, since it uses less digits than its factorization.

77790996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1765 (or 1757 counting only the distinct ones).

The product of its (nonzero) digits is 1500282, while the sum is 54.

The square root of 77790996 is about 8819.9204078041. The cubic root of 77790996 is about 426.8839016927.

The spelling of 77790996 in words is "seventy-seven million, seven hundred ninety thousand, nine hundred ninety-six".