6400323 has 16 divisors (see below), whose sum is σ = 9533440. Its totient is φ = 4243752.

The previous prime is 6400259. The next prime is 6400349. The reversal of 6400323 is 3230046.

6400323 is a `hidden beast` number, since 640 + 0 + 3 + 23 = 666.

It is not a de Polignac number, because 6400323 - 2⁶ = 6400259 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6400296 and 6400305.

It is not an unprimeable number, because it can be changed into a prime (6400363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5490 + ... + 6552.

It is an arithmetic number, because the mean of its divisors is an integer number (595840).

Almost surely, 2^6400323 is an apocalyptic number.

6400323 is a deficient number, since it is larger than the sum of its proper divisors (3133117).

6400323 is a wasteful number, since it uses less digits than its factorization.

6400323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295 (or 1289 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 6400323 is about 2529.8859658095. The cubic root of 6400323 is about 185.6666766945. Note that the first 4 decimals are identical.

Adding to 6400323 its reverse (3230046), we get a palindrome (9630369).

The spelling of 6400323 in words is "six million, four hundred thousand, three hundred twenty-three".