78675980 has 24 divisors (see below), whose sum is σ = 166486320. Its totient is φ = 31229120.

The previous prime is 78675953. The next prime is 78675991. The reversal of 78675980 is 8957687.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12395 + ... + 17634.

It is an arithmetic number, because the mean of its divisors is an integer number (6936930).

Almost surely, 2^78675980 is an apocalyptic number.

It is an amenable number.

78675980 is an abundant number, since it is smaller than the sum of its proper divisors (87810340).

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

78675980 is a wasteful number, since it uses less digits than its factorization.

78675980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30169 (or 30167 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 50.

The square root of 78675980 is about 8869.9481396455. The cubic root of 78675980 is about 428.4966067264.

The spelling of 78675980 in words is "seventy-eight million, six hundred seventy-five thousand, nine hundred eighty".