165600923 has 2 divisors, whose sum is σ = 165600924. Its totient is φ = 165600922.

The previous prime is 165600907. The next prime is 165600959. The reversal of 165600923 is 329006561.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165600923 - 2⁴ = 165600907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165600923.

It is not a weakly prime, because it can be changed into another prime (165600623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82800461 + 82800462.

It is an arithmetic number, because the mean of its divisors is an integer number (82800462).

Almost surely, 2^165600923 is an apocalyptic number.

165600923 is a deficient number, since it is larger than the sum of its proper divisors (1).

165600923 is an equidigital number, since it uses as much as digits as its factorization.

165600923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 165600923 is about 12868.6022162471. The cubic root of 165600923 is about 549.1456963042.

The spelling of 165600923 in words is "one hundred sixty-five million, six hundred thousand, nine hundred twenty-three".