165268723 has 2 divisors, whose sum is σ = 165268724. Its totient is φ = 165268722.

The previous prime is 165268693. The next prime is 165268729. The reversal of 165268723 is 327862561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165268723 - 2⁹ = 165268211 is a prime.

It is not a weakly prime, because it can be changed into another prime (165268729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82634361 + 82634362.

It is an arithmetic number, because the mean of its divisors is an integer number (82634362).

Almost surely, 2^165268723 is an apocalyptic number.

165268723 is a deficient number, since it is larger than the sum of its proper divisors (1).

165268723 is an equidigital number, since it uses as much as digits as its factorization.

165268723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

The square root of 165268723 is about 12855.6883518542. The cubic root of 165268723 is about 548.7782500422.

The spelling of 165268723 in words is "one hundred sixty-five million, two hundred sixty-eight thousand, seven hundred twenty-three".