6328321 has 4 divisors (see below), whose sum is σ = 6333444. Its totient is φ = 6323200.

The previous prime is 6328319. The next prime is 6328327. The reversal of 6328321 is 1238236.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4730625 + 1597696 = 2175^2 + 1264^2 .

It is a cyclic number.

It is not a de Polignac number, because 6328321 - 2¹ = 6328319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6328327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561 + ... + 3601.

It is an arithmetic number, because the mean of its divisors is an integer number (1583361).

It is a Proth number, since it is equal to 1545 ⋅ 2¹² + 1 and 1545 < 2¹².

Almost surely, 2^6328321 is an apocalyptic number.

It is an amenable number.

6328321 is a deficient number, since it is larger than the sum of its proper divisors (5123).

6328321 is a wasteful number, since it uses less digits than its factorization.

6328321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5122.

The product of its digits is 1728, while the sum is 25.

The square root of 6328321 is about 2515.6154316588. The cubic root of 6328321 is about 184.9678151948.

The spelling of 6328321 in words is "six million, three hundred twenty-eight thousand, three hundred twenty-one".