6404023 has 2 divisors, whose sum is σ = 6404024. Its totient is φ = 6404022.

The previous prime is 6404017. The next prime is 6404059. The reversal of 6404023 is 3204046.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6404023 - 2⁹ = 6403511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6404003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3202011 + 3202012.

It is an arithmetic number, because the mean of its divisors is an integer number (3202012).

Almost surely, 2^6404023 is an apocalyptic number.

6404023 is a deficient number, since it is larger than the sum of its proper divisors (1).

6404023 is an equidigital number, since it uses as much as digits as its factorization.

6404023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 6404023 is about 2530.6171184120. The cubic root of 6404023 is about 185.7024475125.

Adding to 6404023 its reverse (3204046), we get a palindrome (9608069).

The spelling of 6404023 in words is "six million, four hundred four thousand, twenty-three".