166730171 has 2 divisors, whose sum is σ = 166730172. Its totient is φ = 166730170.

The previous prime is 166730167. The next prime is 166730189. The reversal of 166730171 is 171037661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166730171 - 2² = 166730167 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (166730471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83365085 + 83365086.

It is an arithmetic number, because the mean of its divisors is an integer number (83365086).

Almost surely, 2^166730171 is an apocalyptic number.

166730171 is a deficient number, since it is larger than the sum of its proper divisors (1).

166730171 is an equidigital number, since it uses as much as digits as its factorization.

166730171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 166730171 is about 12912.4037653723. The cubic root of 166730171 is about 550.3910948365.

The spelling of 166730171 in words is "one hundred sixty-six million, seven hundred thirty thousand, one hundred seventy-one".