168823 has 4 divisors (see below), whose sum is σ = 171040. Its totient is φ = 166608.

The previous prime is 168803. The next prime is 168851. The reversal of 168823 is 328861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168823 is a prime.

It is a Duffinian number.

168823 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 168791 and 168800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168803) 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, 990 + ... + 1147.

It is an arithmetic number, because the mean of its divisors is an integer number (42760).

2¹⁶⁸⁸²³ is an apocalyptic number.

168823 is a deficient number, since it is larger than the sum of its proper divisors (2217).

168823 is an equidigital number, since it uses as much as digits as its factorization.

168823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2216.

The product of its digits is 2304, while the sum is 28.

The square root of 168823 is about 410.8807612921. The cubic root of 168823 is about 55.2684397545.

It can be divided in two parts, 1688 and 23, that added together give a triangular number (1711 = T₅₈).

The spelling of 168823 in words is "one hundred sixty-eight thousand, eight hundred twenty-three".