78965198 has 16 divisors (see below), whose sum is σ = 127720320. Its totient is φ = 36399456.

The previous prime is 78965189. The next prime is 78965209. The reversal of 78965198 is 89156987.

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, 27683 + ... + 30401.

It is an arithmetic number, because the mean of its divisors is an integer number (7982520).

Almost surely, 2^78965198 is an apocalyptic number.

78965198 is a deficient number, since it is larger than the sum of its proper divisors (48755122).

78965198 is a wasteful number, since it uses less digits than its factorization.

78965198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3851.

The product of its digits is 1088640, while the sum is 53.

The square root of 78965198 is about 8886.2364361973. The cubic root of 78965198 is about 429.0210250815.

The spelling of 78965198 in words is "seventy-eight million, nine hundred sixty-five thousand, one hundred ninety-eight".