166987252 has 12 divisors (see below), whose sum is σ = 292451040. Its totient is φ = 83429816.

The previous prime is 166987231. The next prime is 166987279. The reversal of 166987252 is 252789661.

166987252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9802 + ... + 20737.

It is an arithmetic number, because the mean of its divisors is an integer number (24370920).

Almost surely, 2^166987252 is an apocalyptic number.

It is an amenable number.

166987252 is a deficient number, since it is larger than the sum of its proper divisors (125463788).

166987252 is a wasteful number, since it uses less digits than its factorization.

166987252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31910 (or 31908 counting only the distinct ones).

The product of its digits is 362880, while the sum is 46.

The square root of 166987252 is about 12922.3547389785. The cubic root of 166987252 is about 550.6738319695.

The spelling of 166987252 in words is "one hundred sixty-six million, nine hundred eighty-seven thousand, two hundred fifty-two".