79785166 has 16 divisors (see below), whose sum is σ = 121690800. Its totient is φ = 39227328.

The previous prime is 79785151. The next prime is 79785187. The reversal of 79785166 is 66158797.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28986 + ... + 31618.

It is an arithmetic number, because the mean of its divisors is an integer number (7605675).

Almost surely, 2^79785166 is an apocalyptic number.

79785166 is a deficient number, since it is larger than the sum of its proper divisors (41905634).

79785166 is a wasteful number, since it uses less digits than its factorization.

79785166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2883.

The product of its digits is 635040, while the sum is 49.

The square root of 79785166 is about 8932.2542507477. The cubic root of 79785166 is about 430.5008873780.

The spelling of 79785166 in words is "seventy-nine million, seven hundred eighty-five thousand, one hundred sixty-six".