166644232 has 8 divisors (see below), whose sum is σ = 312457950. Its totient is φ = 83322112.

The previous prime is 166644229. The next prime is 166644271. The reversal of 166644232 is 232446661.

It can be written as a sum of positive squares in only one way, i.e., 131194116 + 35450116 = 11454^2 + 5954^2 .

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

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 as a sum of consecutive naturals, namely, 10415257 + ... + 10415272.

Almost surely, 2^166644232 is an apocalyptic number.

It is an amenable number.

166644232 is a deficient number, since it is larger than the sum of its proper divisors (145813718).

166644232 is a wasteful number, since it uses less digits than its factorization.

166644232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20830535 (or 20830531 counting only the distinct ones).

The product of its digits is 41472, while the sum is 34.

The square root of 166644232 is about 12909.0755672124. The cubic root of 166644232 is about 550.2965144954.

The spelling of 166644232 in words is "one hundred sixty-six million, six hundred forty-four thousand, two hundred thirty-two".