168857723 has 2 divisors, whose sum is σ = 168857724. Its totient is φ = 168857722.

The previous prime is 168857701. The next prime is 168857729. The reversal of 168857723 is 327758861.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 168857723 - 2²⁴ = 152080507 is a prime.

It is not a weakly prime, because it can be changed into another prime (168857729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84428861 + 84428862.

It is an arithmetic number, because the mean of its divisors is an integer number (84428862).

Almost surely, 2^168857723 is an apocalyptic number.

168857723 is a deficient number, since it is larger than the sum of its proper divisors (1).

168857723 is an equidigital number, since it uses as much as digits as its factorization.

168857723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 564480, while the sum is 47.

The square root of 168857723 is about 12994.5266554808. The cubic root of 168857723 is about 552.7222864286.

The spelling of 168857723 in words is "one hundred sixty-eight million, eight hundred fifty-seven thousand, seven hundred twenty-three".