166957227 has 32 divisors (see below), whose sum is σ = 257208320. Its totient is φ = 106920000.

The previous prime is 166957213. The next prime is 166957247. The reversal of 166957227 is 722759661.

166957227 is a `hidden beast` number, since 16 + 69 + 572 + 2 + 7 = 666.

It is not a de Polignac number, because 166957227 - 2⁴ = 166957211 is a prime.

It is a Duffinian number.

Its product of digits (317520) is a multiple of the sum of its prime factors (1512).

It is not an unprimeable number, because it can be changed into a prime (166957247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125727 + ... + 127047.

It is an arithmetic number, because the mean of its divisors is an integer number (8037760).

Almost surely, 2^166957227 is an apocalyptic number.

166957227 is a deficient number, since it is larger than the sum of its proper divisors (90251093).

166957227 is a wasteful number, since it uses less digits than its factorization.

166957227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512 (or 1506 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 166957227 is about 12921.1929402823. The cubic root of 166957227 is about 550.6408255121.

The spelling of 166957227 in words is "one hundred sixty-six million, nine hundred fifty-seven thousand, two hundred twenty-seven".