78604998 has 16 divisors (see below), whose sum is σ = 157357296. Its totient is φ = 26177120.

The previous prime is 78604987. The next prime is 78605029. The reversal of 78604998 is 89940687.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 78604998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1540 + ... + 12632.

It is an arithmetic number, because the mean of its divisors is an integer number (9834831).

Almost surely, 2^78604998 is an apocalyptic number.

78604998 is an abundant number, since it is smaller than the sum of its proper divisors (78752298).

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

78604998 is a wasteful number, since it uses less digits than its factorization.

78604998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12279.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 78604998 is about 8865.9459732168. The cubic root of 78604998 is about 428.3677037763.

The spelling of 78604998 in words is "seventy-eight million, six hundred four thousand, nine hundred ninety-eight".