77678796 has 48 divisors (see below), whose sum is σ = 195804000. Its totient is φ = 23826432.

The previous prime is 77678773. The next prime is 77678801. The reversal of 77678796 is 69787677.

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, 69490 + ... + 70598.

It is an arithmetic number, because the mean of its divisors is an integer number (4079250).

Almost surely, 2^77678796 is an apocalyptic number.

It is an amenable number.

77678796 is an abundant number, since it is smaller than the sum of its proper divisors (118125204).

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

77678796 is a wasteful number, since it uses less digits than its factorization.

77678796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578 (or 1576 counting only the distinct ones).

The product of its digits is 6223392, while the sum is 57.

The square root of 77678796 is about 8813.5575110168. The cubic root of 77678796 is about 426.6785676476.

The spelling of 77678796 in words is "seventy-seven million, six hundred seventy-eight thousand, seven hundred ninety-six".