6330221 has 4 divisors (see below), whose sum is σ = 6605472. Its totient is φ = 6054972.

The previous prime is 6330217. The next prime is 6330223. The reversal of 6330221 is 1220336.

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 a cyclic number.

It is not a de Polignac number, because 6330221 - 2² = 6330217 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 6330221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6330223) 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, 137591 + ... + 137636.

It is an arithmetic number, because the mean of its divisors is an integer number (1651368).

Almost surely, 2^6330221 is an apocalyptic number.

It is an amenable number.

6330221 is a deficient number, since it is larger than the sum of its proper divisors (275251).

6330221 is a wasteful number, since it uses less digits than its factorization.

6330221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275250.

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

The square root of 6330221 is about 2515.9930445055. The cubic root of 6330221 is about 184.9863247744.

Adding to 6330221 its reverse (1220336), we get a palindrome (7550557).

The spelling of 6330221 in words is "six million, three hundred thirty thousand, two hundred twenty-one".