13563345 has 16 divisors (see below), whose sum is σ = 21750912. Its totient is φ = 7217280.

The previous prime is 13563317. The next prime is 13563371. The reversal of 13563345 is 54336531.

It is a happy number.

13563345 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13563345 - 2¹⁴ = 13546961 is a prime.

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, 8749 + ... + 10181.

It is an arithmetic number, because the mean of its divisors is an integer number (1359432).

Almost surely, 2^13563345 is an apocalyptic number.

13563345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13563345 is a deficient number, since it is larger than the sum of its proper divisors (8187567).

13563345 is a wasteful number, since it uses less digits than its factorization.

13563345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2072.

The product of its digits is 16200, while the sum is 30.

The square root of 13563345 is about 3682.8446885526. The cubic root of 13563345 is about 238.4819987380.

Adding to 13563345 its reverse (54336531), we get a palindrome (67899876).

The spelling of 13563345 in words is "thirteen million, five hundred sixty-three thousand, three hundred forty-five".