165600959 has 2 divisors, whose sum is σ = 165600960. Its totient is φ = 165600958.

The previous prime is 165600923. The next prime is 165600971. The reversal of 165600959 is 959006561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165600959 - 2¹² = 165596863 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165600059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82800479 + 82800480.

It is an arithmetic number, because the mean of its divisors is an integer number (82800480).

Almost surely, 2^165600959 is an apocalyptic number.

165600959 is a deficient number, since it is larger than the sum of its proper divisors (1).

165600959 is an equidigital number, since it uses as much as digits as its factorization.

165600959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72900, while the sum is 41.

The square root of 165600959 is about 12868.6036150003. The cubic root of 165600959 is about 549.1457360972.

The spelling of 165600959 in words is "one hundred sixty-five million, six hundred thousand, nine hundred fifty-nine".