166666227 has 32 divisors (see below), whose sum is σ = 277283328. Its totient is φ = 86697216.

The previous prime is 166666223. The next prime is 166666231. The reversal of 166666227 is 722666661.

It is an interprime number because it is at equal distance from previous prime (166666223) and next prime (166666231).

It is not a de Polignac number, because 166666227 - 2² = 166666223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166666223) 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, 15748 + ... + 24110.

It is an arithmetic number, because the mean of its divisors is an integer number (8665104).

Almost surely, 2^166666227 is an apocalyptic number.

166666227 is a deficient number, since it is larger than the sum of its proper divisors (110617101).

166666227 is a wasteful number, since it uses less digits than its factorization.

166666227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8459.

The product of its digits is 217728, while the sum is 42.

The square root of 166666227 is about 12909.9274591300. The cubic root of 166666227 is about 550.3207242329.

The spelling of 166666227 in words is "one hundred sixty-six million, six hundred sixty-six thousand, two hundred twenty-seven".