166670017 has 2 divisors, whose sum is σ = 166670018. Its totient is φ = 166670016.

The previous prime is 166670011. The next prime is 166670051. The reversal of 166670017 is 710076661.

It is a happy number.

It is an a-pointer prime, because the next prime (166670051) can be obtained adding 166670017 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140209281 + 26460736 = 11841^2 + 5144^2 .

It is a cyclic number.

It is not a de Polignac number, because 166670017 - 2⁷ = 166669889 is a prime.

It is not a weakly prime, because it can be changed into another prime (166670011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83335008 + 83335009.

It is an arithmetic number, because the mean of its divisors is an integer number (83335009).

Almost surely, 2^166670017 is an apocalyptic number.

It is an amenable number.

166670017 is a deficient number, since it is larger than the sum of its proper divisors (1).

166670017 is an equidigital number, since it uses as much as digits as its factorization.

166670017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 166670017 is about 12910.0742445580. The cubic root of 166670017 is about 550.3248956434.

The spelling of 166670017 in words is "one hundred sixty-six million, six hundred seventy thousand, seventeen".