168923 has 4 divisors (see below), whose sum is σ = 169848. Its totient is φ = 168000.

The previous prime is 168913. The next prime is 168937. The reversal of 168923 is 329861.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 329861 = 7 ⋅47123.

It is a cyclic number.

It is not a de Polignac number, because 168923 - 2¹⁰ = 167899 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (168913) 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 in 3 ways as a sum of consecutive naturals, for example, 86 + ... + 587.

It is an arithmetic number, because the mean of its divisors is an integer number (42462).

2¹⁶⁸⁹²³ is an apocalyptic number.

168923 is a deficient number, since it is larger than the sum of its proper divisors (925).

168923 is an equidigital number, since it uses as much as digits as its factorization.

168923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924.

The product of its digits is 2592, while the sum is 29.

The square root of 168923 is about 411.0024330828. The cubic root of 168923 is about 55.2793501026.

The spelling of 168923 in words is "one hundred sixty-eight thousand, nine hundred twenty-three".