166645112 has 8 divisors (see below), whose sum is σ = 312459600. Its totient is φ = 83322552.

The previous prime is 166645111. The next prime is 166645133. The reversal of 166645112 is 211546661.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166645111) 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 as a sum of consecutive naturals, namely, 10415312 + ... + 10415327.

It is an arithmetic number, because the mean of its divisors is an integer number (39057450).

Almost surely, 2^166645112 is an apocalyptic number.

It is an amenable number.

166645112 is a deficient number, since it is larger than the sum of its proper divisors (145814488).

166645112 is a wasteful number, since it uses less digits than its factorization.

166645112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20830645 (or 20830641 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 166645112 is about 12909.1096517149. The cubic root of 166645112 is about 550.2974831459.

The spelling of 166645112 in words is "one hundred sixty-six million, six hundred forty-five thousand, one hundred twelve".