13568642 has 4 divisors (see below), whose sum is σ = 20352966. Its totient is φ = 6784320.

The previous prime is 13568627. The next prime is 13568707. The reversal of 13568642 is 24686531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11978521 + 1590121 = 3461^2 + 1261^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3392159 + ... + 3392162.

Almost surely, 2^13568642 is an apocalyptic number.

13568642 is a deficient number, since it is larger than the sum of its proper divisors (6784324).

13568642 is an equidigital number, since it uses as much as digits as its factorization.

13568642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6784323.

The product of its digits is 34560, while the sum is 35.

The square root of 13568642 is about 3683.5637635312. The cubic root of 13568642 is about 238.5130401155.

The spelling of 13568642 in words is "thirteen million, five hundred sixty-eight thousand, six hundred forty-two".