166172627 has 2 divisors, whose sum is σ = 166172628. Its totient is φ = 166172626.

The previous prime is 166172621. The next prime is 166172711. The reversal of 166172627 is 726271661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166172627 - 2⁶ = 166172563 is a prime.

It is a super-2 number, since 2×166172627² = 55226683928162258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (166172621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83086313 + 83086314.

It is an arithmetic number, because the mean of its divisors is an integer number (83086314).

Almost surely, 2^166172627 is an apocalyptic number.

166172627 is a deficient number, since it is larger than the sum of its proper divisors (1).

166172627 is an equidigital number, since it uses as much as digits as its factorization.

166172627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 38.

The square root of 166172627 is about 12890.7962128024. The cubic root of 166172627 is about 549.7769089711.

The spelling of 166172627 in words is "one hundred sixty-six million, one hundred seventy-two thousand, six hundred twenty-seven".