166045564 has 12 divisors (see below), whose sum is σ = 294917224. Its totient is φ = 81783504.

The previous prime is 166045553. The next prime is 166045571. The reversal of 166045564 is 465540661.

It is a super-2 number, since 2×166045564² = 55142258648156192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 309519 + ... + 310054.

Almost surely, 2^166045564 is an apocalyptic number.

It is an amenable number.

166045564 is a deficient number, since it is larger than the sum of its proper divisors (128871660).

166045564 is a wasteful number, since it uses less digits than its factorization.

166045564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619644 (or 619642 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 166045564 is about 12885.8668315329. The cubic root of 166045564 is about 549.6367452604.

The spelling of 166045564 in words is "one hundred sixty-six million, forty-five thousand, five hundred sixty-four".