170717117 has 2 divisors, whose sum is σ = 170717118. Its totient is φ = 170717116.

The previous prime is 170717087. The next prime is 170717119. The reversal of 170717117 is 711717071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133494916 + 37222201 = 11554^2 + 6101^2 .

It is a cyclic number.

It is not a de Polignac number, because 170717117 - 2²⁴ = 153939901 is a prime.

Together with 170717119, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170717119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85358558 + 85358559.

It is an arithmetic number, because the mean of its divisors is an integer number (85358559).

Almost surely, 2^170717117 is an apocalyptic number.

It is an amenable number.

170717117 is a deficient number, since it is larger than the sum of its proper divisors (1).

170717117 is an equidigital number, since it uses as much as digits as its factorization.

170717117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2401, while the sum is 32.

The square root of 170717117 is about 13065.8760517617. The cubic root of 170717117 is about 554.7436708261.

The spelling of 170717117 in words is "one hundred seventy million, seven hundred seventeen thousand, one hundred seventeen".