2168823 has 16 divisors (see below), whose sum is σ = 3034080. Its totient is φ = 1376256.

The previous prime is 2168819. The next prime is 2168827. The reversal of 2168823 is 3288612.

It is an interprime number because it is at equal distance from previous prime (2168819) and next prime (2168827).

It is not a de Polignac number, because 2168823 - 2² = 2168819 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2168827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8311 + ... + 8567.

It is an arithmetic number, because the mean of its divisors is an integer number (189630).

2^2168823 is an apocalyptic number.

2168823 is a deficient number, since it is larger than the sum of its proper divisors (865257).

2168823 is a wasteful number, since it uses less digits than its factorization.

2168823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386.

The product of its digits is 4608, while the sum is 30.

The square root of 2168823 is about 1472.6924322478. The cubic root of 2168823 is about 129.4418476450.

The spelling of 2168823 in words is "two million, one hundred sixty-eight thousand, eight hundred twenty-three".