77855108 has 12 divisors (see below), whose sum is σ = 136314192. Its totient is φ = 38908200.

The previous prime is 77855059. The next prime is 77855117. The reversal of 77855108 is 80155877.

It is a super-2 number, since 2×77855108² = 12122835683383328, which contains 22 as substring.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 7991 + ... + 14817.

It is an arithmetic number, because the mean of its divisors is an integer number (11359516).

Almost surely, 2^77855108 is an apocalyptic number.

It is an amenable number.

77855108 is a deficient number, since it is larger than the sum of its proper divisors (58459084).

77855108 is a wasteful number, since it uses less digits than its factorization.

77855108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9682 (or 9680 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 41.

The square root of 77855108 is about 8823.5541591810. The cubic root of 77855108 is about 427.0011426201.

The spelling of 77855108 in words is "seventy-seven million, eight hundred fifty-five thousand, one hundred eight".