77004705 has 16 divisors (see below), whose sum is σ = 123330240. Its totient is φ = 41028288.

The previous prime is 77004703. The next prime is 77004709. The reversal of 77004705 is 50740077.

It is a happy number.

It is not a de Polignac number, because 77004705 - 2¹ = 77004703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77004703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18726 + ... + 22464.

It is an arithmetic number, because the mean of its divisors is an integer number (7708140).

Almost surely, 2^77004705 is an apocalyptic number.

It is an amenable number.

77004705 is a deficient number, since it is larger than the sum of its proper divisors (46325535).

77004705 is a wasteful number, since it uses less digits than its factorization.

77004705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5120.

The product of its (nonzero) digits is 6860, while the sum is 30.

The square root of 77004705 is about 8775.2324755530. The cubic root of 77004705 is about 425.4407515210.

Subtracting from 77004705 its product of nonzero digits (6860), we obtain a triangular number (76997845 = T₁₂₄₀₉).

The spelling of 77004705 in words is "seventy-seven million, four thousand, seven hundred five".