13563368 has 64 divisors (see below), whose sum is σ = 32363520. Its totient is φ = 5184000.

The previous prime is 13563317. The next prime is 13563371. The reversal of 13563368 is 86336531.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22268 + ... + 22868.

It is an arithmetic number, because the mean of its divisors is an integer number (505680).

Almost surely, 2^13563368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13563368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16181760).

13563368 is an abundant number, since it is smaller than the sum of its proper divisors (18800152).

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

13563368 is a wasteful number, since it uses less digits than its factorization.

13563368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658 (or 654 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

The square root of 13563368 is about 3682.8478111375. The cubic root of 13563368 is about 238.4821335397.

Adding to 13563368 its reverse (86336531), we get a palindrome (99899899).

It can be divided in two parts, 13563 and 368, that added together give a palindrome (13931).

The spelling of 13563368 in words is "thirteen million, five hundred sixty-three thousand, three hundred sixty-eight".