168104917 has 2 divisors, whose sum is σ = 168104918. Its totient is φ = 168104916.

The previous prime is 168104899. The next prime is 168104927. The reversal of 168104917 is 719401861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166564836 + 1540081 = 12906^2 + 1241^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168104917 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168104927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84052458 + 84052459.

It is an arithmetic number, because the mean of its divisors is an integer number (84052459).

Almost surely, 2^168104917 is an apocalyptic number.

It is an amenable number.

168104917 is a deficient number, since it is larger than the sum of its proper divisors (1).

168104917 is an equidigital number, since it uses as much as digits as its factorization.

168104917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 168104917 is about 12965.5280262703. The cubic root of 168104917 is about 551.8996756781.

The spelling of 168104917 in words is "one hundred sixty-eight million, one hundred four thousand, nine hundred seventeen".