165334817 has 2 divisors, whose sum is σ = 165334818. Its totient is φ = 165334816.

The previous prime is 165334783. The next prime is 165334847. The reversal of 165334817 is 718433561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165276736 + 58081 = 12856^2 + 241^2 .

It is a cyclic number.

It is not a de Polignac number, because 165334817 - 2¹² = 165330721 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (165334847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82667408 + 82667409.

It is an arithmetic number, because the mean of its divisors is an integer number (82667409).

Almost surely, 2^165334817 is an apocalyptic number.

It is an amenable number.

165334817 is a deficient number, since it is larger than the sum of its proper divisors (1).

165334817 is an equidigital number, since it uses as much as digits as its factorization.

165334817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 38.

The square root of 165334817 is about 12858.2587079278. The cubic root of 165334817 is about 548.8513957952.

The spelling of 165334817 in words is "one hundred sixty-five million, three hundred thirty-four thousand, eight hundred seventeen".