2164023 has 8 divisors (see below), whose sum is σ = 3206000. Its totient is φ = 1442664.

The previous prime is 2164013. The next prime is 2164031. The reversal of 2164023 is 3204612.

It is a happy number.

2164023 is a `hidden beast` number, since 2 + 1 + 640 + 23 = 666.

It is not a de Polignac number, because 2164023 - 2⁸ = 2163767 is a prime.

It is a Duffinian number.

2164023 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2163987 and 2164005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40048 + ... + 40101.

It is an arithmetic number, because the mean of its divisors is an integer number (400750).

2^2164023 is an apocalyptic number.

2164023 is a deficient number, since it is larger than the sum of its proper divisors (1041977).

2164023 is an equidigital number, since it uses as much as digits as its factorization.

2164023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80158 (or 80152 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2164023 is about 1471.0618613777. The cubic root of 2164023 is about 129.3462843221.

Adding to 2164023 its reverse (3204612), we get a palindrome (5368635).

It can be divided in two parts, 2 and 164023, that added together give a square (164025 = 405²).

The spelling of 2164023 in words is "two million, one hundred sixty-four thousand, twenty-three".