166990324 has 12 divisors (see below), whose sum is σ = 300131524. Its totient is φ = 81238464.

The previous prime is 166990319. The next prime is 166990339. The reversal of 166990324 is 423099661.

166990324 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 152028900 + 14961424 = 12330^2 + 3868^2 .

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, 564009 + ... + 564304.

Almost surely, 2^166990324 is an apocalyptic number.

It is an amenable number.

166990324 is a deficient number, since it is larger than the sum of its proper divisors (133141200).

166990324 is a wasteful number, since it uses less digits than its factorization.

166990324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128354 (or 1128352 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 166990324 is about 12922.4736022172. The cubic root of 166990324 is about 550.6772087934.

The spelling of 166990324 in words is "one hundred sixty-six million, nine hundred ninety thousand, three hundred twenty-four".