77676775 has 12 divisors (see below), whose sum is σ = 105075864. Its totient is φ = 56492000.

The previous prime is 77676749. The next prime is 77676799. The reversal of 77676775 is 57767677.

It is not a de Polignac number, because 77676775 - 2⁷ = 77676647 is a prime.

It is a Duffinian number.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 140956 + ... + 141505.

It is an arithmetic number, because the mean of its divisors is an integer number (8756322).

Almost surely, 2^77676775 is an apocalyptic number.

77676775 is a deficient number, since it is larger than the sum of its proper divisors (27399089).

77676775 is a wasteful number, since it uses less digits than its factorization.

77676775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282482 (or 282477 counting only the distinct ones).

The product of its digits is 3025260, while the sum is 52.

The square root of 77676775 is about 8813.4428573628. The cubic root of 77676775 is about 426.6748672605.

The spelling of 77676775 in words is "seventy-seven million, six hundred seventy-six thousand, seven hundred seventy-five".