77779116 has 30 divisors (see below), whose sum is σ = 203330820. Its totient is φ = 25926264.

The previous prime is 77779109. The next prime is 77779129. The reversal of 77779116 is 61197777.

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 9 ways as a sum of consecutive naturals, for example, 119706 + ... + 120353.

It is an arithmetic number, because the mean of its divisors is an integer number (6777694).

Almost surely, 2^77779116 is an apocalyptic number.

It is an amenable number.

77779116 is an abundant number, since it is smaller than the sum of its proper divisors (125551704).

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

77779116 is a wasteful number, since it uses less digits than its factorization.

77779116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240075 (or 240064 counting only the distinct ones).

The product of its digits is 129654, while the sum is 45.

The square root of 77779116 is about 8819.2469066242. The cubic root of 77779116 is about 426.8621697906.

The spelling of 77779116 in words is "seventy-seven million, seven hundred seventy-nine thousand, one hundred sixteen".