77682156 has 48 divisors (see below), whose sum is σ = 187944960. Its totient is φ = 24946560.

The previous prime is 77682139. The next prime is 77682161. The reversal of 77682156 is 65128677.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136240 + ... + 136808.

It is an arithmetic number, because the mean of its divisors is an integer number (3915520).

Almost surely, 2^77682156 is an apocalyptic number.

It is an amenable number.

77682156 is an abundant number, since it is smaller than the sum of its proper divisors (110262804).

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

77682156 is a wasteful number, since it uses less digits than its factorization.

77682156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974 (or 972 counting only the distinct ones).

The product of its digits is 141120, while the sum is 42.

The square root of 77682156 is about 8813.7481243793. The cubic root of 77682156 is about 426.6847195595.

The spelling of 77682156 in words is "seventy-seven million, six hundred eighty-two thousand, one hundred fifty-six".