166750117 has 2 divisors, whose sum is σ = 166750118. Its totient is φ = 166750116.

The previous prime is 166750097. The next prime is 166750121. The reversal of 166750117 is 711057661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149059681 + 17690436 = 12209^2 + 4206^2 .

It is a cyclic number.

It is not a de Polignac number, because 166750117 - 2¹¹ = 166748069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166757117) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83375058 + 83375059.

It is an arithmetic number, because the mean of its divisors is an integer number (83375059).

Almost surely, 2^166750117 is an apocalyptic number.

It is an amenable number.

166750117 is a deficient number, since it is larger than the sum of its proper divisors (1).

166750117 is an equidigital number, since it uses as much as digits as its factorization.

166750117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820, while the sum is 34.

The square root of 166750117 is about 12913.1761004023. The cubic root of 166750117 is about 550.4130418002.

The spelling of 166750117 in words is "one hundred sixty-six million, seven hundred fifty thousand, one hundred seventeen".