165016717 has 2 divisors, whose sum is σ = 165016718. Its totient is φ = 165016716.

The previous prime is 165016711. The next prime is 165016727. The reversal of 165016717 is 717610561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139098436 + 25918281 = 11794^2 + 5091^2 .

It is a cyclic number.

It is not a de Polignac number, because 165016717 - 2⁷ = 165016589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165016711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82508358 + 82508359.

It is an arithmetic number, because the mean of its divisors is an integer number (82508359).

Almost surely, 2^165016717 is an apocalyptic number.

It is an amenable number.

165016717 is a deficient number, since it is larger than the sum of its proper divisors (1).

165016717 is an equidigital number, since it uses as much as digits as its factorization.

165016717 is an evil number, because the sum of its binary digits is even.

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

The square root of 165016717 is about 12845.8832705268. The cubic root of 165016717 is about 548.4991777513.

The spelling of 165016717 in words is "one hundred sixty-five million, sixteen thousand, seven hundred seventeen".