6405323 has 4 divisors (see below), whose sum is σ = 6554328. Its totient is φ = 6256320.

The previous prime is 6405283. The next prime is 6405331. The reversal of 6405323 is 3235046.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3235046 = 2 ⋅1617523.

It is a cyclic number.

It is not a de Polignac number, because 6405323 - 2⁸ = 6405067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6405353) 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 3 ways as a sum of consecutive naturals, for example, 74438 + ... + 74523.

It is an arithmetic number, because the mean of its divisors is an integer number (1638582).

Almost surely, 2^6405323 is an apocalyptic number.

6405323 is a deficient number, since it is larger than the sum of its proper divisors (149005).

6405323 is a wasteful number, since it uses less digits than its factorization.

6405323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149004.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 6405323 is about 2530.8739597222. The cubic root of 6405323 is about 185.7150123668.

The spelling of 6405323 in words is "six million, four hundred five thousand, three hundred twenty-three".