13622881 has 4 divisors (see below), whose sum is σ = 13639600. Its totient is φ = 13606164.

The previous prime is 13622879. The next prime is 13622887. The reversal of 13622881 is 18822631.

13622881 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18822631 = 677 ⋅27803.

It is a cyclic number.

It is not a de Polignac number, because 13622881 - 2¹ = 13622879 is a prime.

It is a super-2 number, since 2×13622881² = 371165773480322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13622887) 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, 7071 + ... + 8788.

It is an arithmetic number, because the mean of its divisors is an integer number (3409900).

Almost surely, 2^13622881 is an apocalyptic number.

It is an amenable number.

13622881 is a deficient number, since it is larger than the sum of its proper divisors (16719).

13622881 is an equidigital number, since it uses as much as digits as its factorization.

13622881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16718.

The product of its digits is 4608, while the sum is 31.

The square root of 13622881 is about 3690.9187203188. The cubic root of 13622881 is about 238.8304265649.

The spelling of 13622881 in words is "thirteen million, six hundred twenty-two thousand, eight hundred eighty-one".