166099772 has 12 divisors (see below), whose sum is σ = 291555096. Its totient is φ = 82798320.

The previous prime is 166099727. The next prime is 166099777. The reversal of 166099772 is 277990661.

166099772 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166099777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61403 + ... + 64050.

It is an arithmetic number, because the mean of its divisors is an integer number (24296258).

Almost surely, 2^166099772 is an apocalyptic number.

It is an amenable number.

166099772 is a deficient number, since it is larger than the sum of its proper divisors (125455324).

166099772 is a wasteful number, since it uses less digits than its factorization.

166099772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125788 (or 125786 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 47.

The square root of 166099772 is about 12887.9700496238. The cubic root of 166099772 is about 549.6965510676.

The spelling of 166099772 in words is "one hundred sixty-six million, ninety-nine thousand, seven hundred seventy-two".