77704916 has 12 divisors (see below), whose sum is σ = 136226580. Its totient is φ = 38783040.

The previous prime is 77704903. The next prime is 77704919. The reversal of 77704916 is 61940777.

It can be written as a sum of positive squares in 2 ways, for example, as 25200400 + 52504516 = 5020^2 + 7246^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77704919) by changing a digit.

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, 14795 + ... + 19346.

It is an arithmetic number, because the mean of its divisors is an integer number (11352215).

Almost surely, 2^77704916 is an apocalyptic number.

It is an amenable number.

77704916 is a deficient number, since it is larger than the sum of its proper divisors (58521664).

77704916 is a wasteful number, since it uses less digits than its factorization.

77704916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34714 (or 34712 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 41.

The square root of 77704916 is about 8815.0391944676. The cubic root of 77704916 is about 426.7263867687.

The spelling of 77704916 in words is "seventy-seven million, seven hundred four thousand, nine hundred sixteen".