6405023 has 2 divisors, whose sum is σ = 6405024. Its totient is φ = 6405022.

The previous prime is 6405013. The next prime is 6405029. The reversal of 6405023 is 3205046.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6405023 - 2¹⁸ = 6142879 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6404986 and 6405004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6405029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3202511 + 3202512.

It is an arithmetic number, because the mean of its divisors is an integer number (3202512).

Almost surely, 2^6405023 is an apocalyptic number.

6405023 is a deficient number, since it is larger than the sum of its proper divisors (1).

6405023 is an equidigital number, since it uses as much as digits as its factorization.

6405023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 6405023 is about 2530.8146909642. The cubic root of 6405023 is about 185.7121129360.

The spelling of 6405023 in words is "six million, four hundred five thousand, twenty-three".