166641627 has 18 divisors (see below), whose sum is σ = 231013588. Its totient is φ = 106846208.

The previous prime is 166641623. The next prime is 166641677. The reversal of 166641627 is 726146661.

It is not a de Polignac number, because 166641627 - 2² = 166641623 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166641623) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 648283 + ... + 648539.

Almost surely, 2^166641627 is an apocalyptic number.

166641627 is a deficient number, since it is larger than the sum of its proper divisors (64371961).

166641627 is an frugal number, since it uses more digits than its factorization.

166641627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575 (or 289 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 166641627 is about 12908.9746688108. The cubic root of 166641627 is about 550.2936470496.

The spelling of 166641627 in words is "one hundred sixty-six million, six hundred forty-one thousand, six hundred twenty-seven".