6320321 has 4 divisors (see below), whose sum is σ = 7223232. Its totient is φ = 5417412.

The previous prime is 6320317. The next prime is 6320323. The reversal of 6320321 is 1230236.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6320321 - 2² = 6320317 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6320321.

It is not an unprimeable number, because it can be changed into a prime (6320323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 451445 + ... + 451458.

It is an arithmetic number, because the mean of its divisors is an integer number (1805808).

Almost surely, 2^6320321 is an apocalyptic number.

It is an amenable number.

6320321 is a deficient number, since it is larger than the sum of its proper divisors (902911).

6320321 is an equidigital number, since it uses as much as digits as its factorization.

6320321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902910.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 6320321 is about 2514.0248606567. The cubic root of 6320321 is about 184.8898394567.

Adding to 6320321 its reverse (1230236), we get a palindrome (7550557).

The spelling of 6320321 in words is "six million, three hundred twenty thousand, three hundred twenty-one".