6420323 has 12 divisors (see below), whose sum is σ = 8043840. Its totient is φ = 5079312.

The previous prime is 6420307. The next prime is 6420343. The reversal of 6420323 is 3230246.

It is not a de Polignac number, because 6420323 - 2⁴ = 6420307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6420295 and 6420304.

It is not an unprimeable number, because it can be changed into a prime (6420343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4403 + ... + 5676.

It is an arithmetic number, because the mean of its divisors is an integer number (670320).

Almost surely, 2^6420323 is an apocalyptic number.

6420323 is a deficient number, since it is larger than the sum of its proper divisors (1623517).

6420323 is a wasteful number, since it uses less digits than its factorization.

6420323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10106 (or 10099 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 6420323 is about 2533.8356300281. The cubic root of 6420323 is about 185.8598686304.

Adding to 6420323 its reverse (3230246), we get a palindrome (9650569).

The spelling of 6420323 in words is "six million, four hundred twenty thousand, three hundred twenty-three".