166672185 has 16 divisors (see below), whose sum is σ = 266867520. Its totient is φ = 88827840.

The previous prime is 166672141. The next prime is 166672189. The reversal of 166672185 is 581276661.

It is not a de Polignac number, because 166672185 - 2¹⁰ = 166671161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166672189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23730 + ... + 29940.

It is an arithmetic number, because the mean of its divisors is an integer number (16679220).

Almost surely, 2^166672185 is an apocalyptic number.

166672185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166672185 is a deficient number, since it is larger than the sum of its proper divisors (100195335).

166672185 is a wasteful number, since it uses less digits than its factorization.

166672185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8008.

The product of its digits is 120960, while the sum is 42.

The square root of 166672185 is about 12910.1582097200. The cubic root of 166672185 is about 550.3272817938.

The spelling of 166672185 in words is "one hundred sixty-six million, six hundred seventy-two thousand, one hundred eighty-five".