78684704 has 48 divisors (see below), whose sum is σ = 187463808. Its totient is φ = 31736832.

The previous prime is 78684677. The next prime is 78684707. The reversal of 78684704 is 40748687.

It is not an unprimeable number, because it can be changed into a prime (78684707) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6524 + ... + 14139.

It is an arithmetic number, because the mean of its divisors is an integer number (3905496).

Almost surely, 2^78684704 is an apocalyptic number.

It is an amenable number.

78684704 is an abundant number, since it is smaller than the sum of its proper divisors (108779104).

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

78684704 is a wasteful number, since it uses less digits than its factorization.

78684704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20697 (or 20689 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 44.

The square root of 78684704 is about 8870.4398989002. The cubic root of 78684704 is about 428.5124441151.

The spelling of 78684704 in words is "seventy-eight million, six hundred eighty-four thousand, seven hundred four".