13564874 has 4 divisors (see below), whose sum is σ = 20347314. Its totient is φ = 6782436.

The previous prime is 13564849. The next prime is 13564883. The reversal of 13564874 is 47846531.

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., 13213225 + 351649 = 3635^2 + 593^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3391217 + ... + 3391220.

Almost surely, 2^13564874 is an apocalyptic number.

13564874 is a deficient number, since it is larger than the sum of its proper divisors (6782440).

13564874 is an equidigital number, since it uses as much as digits as its factorization.

13564874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6782439.

The product of its digits is 80640, while the sum is 38.

The square root of 13564874 is about 3683.0522668026. The cubic root of 13564874 is about 238.4909597840.

The spelling of 13564874 in words is "thirteen million, five hundred sixty-four thousand, eight hundred seventy-four".