13563116 has 12 divisors (see below), whose sum is σ = 27126288. Its totient is φ = 5812752.

The previous prime is 13563107. The next prime is 13563149. The reversal of 13563116 is 61136531.

13563116 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242171 + ... + 242226.

It is an arithmetic number, because the mean of its divisors is an integer number (2260524).

Almost surely, 2^13563116 is an apocalyptic number.

It is an amenable number.

13563116 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13563116 is a wasteful number, since it uses less digits than its factorization.

13563116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484408 (or 484406 counting only the distinct ones).

The product of its digits is 1620, while the sum is 26.

The square root of 13563116 is about 3682.8135983240. The cubic root of 13563116 is about 238.4806565744.

Adding to 13563116 its reverse (61136531), we get a palindrome (74699647).

The spelling of 13563116 in words is "thirteen million, five hundred sixty-three thousand, one hundred sixteen".