13627221 has 4 divisors (see below), whose sum is σ = 18169632. Its totient is φ = 9084812.

The previous prime is 13627213. The next prime is 13627231. The reversal of 13627221 is 12272631.

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 13627221 - 2³ = 13627213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13627191 and 13627200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13627231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2271201 + ... + 2271206.

It is an arithmetic number, because the mean of its divisors is an integer number (4542408).

Almost surely, 2^13627221 is an apocalyptic number.

It is an amenable number.

13627221 is a deficient number, since it is larger than the sum of its proper divisors (4542411).

13627221 is an equidigital number, since it uses as much as digits as its factorization.

13627221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4542410.

The product of its digits is 1008, while the sum is 24.

The square root of 13627221 is about 3691.5066030010. The cubic root of 13627221 is about 238.8557862030.

Adding to 13627221 its reverse (12272631), we get a palindrome (25899852).

The spelling of 13627221 in words is "thirteen million, six hundred twenty-seven thousand, two hundred twenty-one".