6369221 has 4 divisors (see below), whose sum is σ = 6464352. Its totient is φ = 6274092.

The previous prime is 6369173. The next prime is 6369239. The reversal of 6369221 is 1229636.

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 6369221 - 2¹⁴ = 6352837 is a prime.

It is a super-2 number, since 2×6369221² = 81133952293682, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6363221) 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, 47465 + ... + 47598.

It is an arithmetic number, because the mean of its divisors is an integer number (1616088).

Almost surely, 2^6369221 is an apocalyptic number.

It is an amenable number.

6369221 is a deficient number, since it is larger than the sum of its proper divisors (95131).

6369221 is an equidigital number, since it uses as much as digits as its factorization.

6369221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95130.

The product of its digits is 3888, while the sum is 29.

The square root of 6369221 is about 2523.7315625874. The cubic root of 6369221 is about 185.3654427255.

The spelling of 6369221 in words is "six million, three hundred sixty-nine thousand, two hundred twenty-one".