77704704 has 320 divisors, whose sum is σ = 290695680. Its totient is φ = 19906560.

The previous prime is 77704703. The next prime is 77704709. The reversal of 77704704 is 40740777.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77704703) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1064412 + ... + 1064484.

It is an arithmetic number, because the mean of its divisors is an integer number (908424).

Almost surely, 2^77704704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77704704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145347840).

77704704 is an abundant number, since it is smaller than the sum of its proper divisors (212990976).

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

77704704 is a wasteful number, since it uses less digits than its factorization.

77704704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 38416, while the sum is 36.

The square root of 77704704 is about 8815.0271695554. The cubic root of 77704704 is about 426.7259986934.

The spelling of 77704704 in words is "seventy-seven million, seven hundred four thousand, seven hundred four".