166530664 has 16 divisors (see below), whose sum is σ = 318137220. Its totient is φ = 81694080.

The previous prime is 166530653. The next prime is 166530697. The reversal of 166530664 is 466035661.

166530664 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 159012100 + 7518564 = 12610^2 + 2742^2 .

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, 195957 + ... + 196804.

Almost surely, 2^166530664 is an apocalyptic number.

It is an amenable number.

166530664 is a deficient number, since it is larger than the sum of its proper divisors (151606556).

166530664 is a wasteful number, since it uses less digits than its factorization.

166530664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392820 (or 392816 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 166530664 is about 12904.6760517264. The cubic root of 166530664 is about 550.1714771104.

The spelling of 166530664 in words is "one hundred sixty-six million, five hundred thirty thousand, six hundred sixty-four".