165946597 has 2 divisors, whose sum is σ = 165946598. Its totient is φ = 165946596.

The previous prime is 165946577. The next prime is 165946601. The reversal of 165946597 is 795649561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 96707556 + 69239041 = 9834^2 + 8321^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165946597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165946507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82973298 + 82973299.

It is an arithmetic number, because the mean of its divisors is an integer number (82973299).

Almost surely, 2^165946597 is an apocalyptic number.

It is an amenable number.

165946597 is a deficient number, since it is larger than the sum of its proper divisors (1).

165946597 is an equidigital number, since it uses as much as digits as its factorization.

165946597 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2041200, while the sum is 52.

The square root of 165946597 is about 12882.0261216937. The cubic root of 165946597 is about 549.5275248169.

The spelling of 165946597 in words is "one hundred sixty-five million, nine hundred forty-six thousand, five hundred ninety-seven".