77704 has 16 divisors (see below), whose sum is σ = 159120. Its totient is φ = 35280.

The previous prime is 77699. The next prime is 77711. The reversal of 77704 is 40777.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 354 + ... + 529.

It is an arithmetic number, because the mean of its divisors is an integer number (9945).

2⁷⁷⁷⁰⁴ is an apocalyptic number.

It is an amenable number.

77704 is an abundant number, since it is smaller than the sum of its proper divisors (81416).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79560).

77704 is a wasteful number, since it uses less digits than its factorization.

77704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900 (or 896 counting only the distinct ones).

The product of its (nonzero) digits is 1372, while the sum is 25.

The square root of 77704 is about 278.7543721630. The cubic root of 77704 is about 42.6724709985.

The spelling of 77704 in words is "seventy-seven thousand, seven hundred four", and thus it is an iban number.