13621568 has 14 divisors (see below), whose sum is σ = 27030426. Its totient is φ = 6810752.

The previous prime is 13621549. The next prime is 13621577. The reversal of 13621568 is 86512631.

It is a happy number.

13621568 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 12902464 + 719104 = 3592^2 + 848^2 .

It is a super-2 number, since 2×13621568² = 371094229557248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106355 + ... + 106482.

Almost surely, 2^13621568 is an apocalyptic number.

It is an amenable number.

13621568 is a deficient number, since it is larger than the sum of its proper divisors (13408858).

13621568 is an equidigital number, since it uses as much as digits as its factorization.

13621568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212849 (or 212839 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 13621568 is about 3690.7408470387. The cubic root of 13621568 is about 238.8227533366.

The spelling of 13621568 in words is "thirteen million, six hundred twenty-one thousand, five hundred sixty-eight".