13000563 has 24 divisors (see below), whose sum is σ = 20532096. Its totient is φ = 7891200.

The previous prime is 13000553. The next prime is 13000583. The reversal of 13000563 is 36500031.

It is not a de Polignac number, because 13000563 - 2⁶ = 13000499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13000553) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3373 + ... + 6113.

It is an arithmetic number, because the mean of its divisors is an integer number (855504).

Almost surely, 2^13000563 is an apocalyptic number.

13000563 is a deficient number, since it is larger than the sum of its proper divisors (7531533).

13000563 is a wasteful number, since it uses less digits than its factorization.

13000563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2795 (or 2792 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 13000563 is about 3605.6293486713. The cubic root of 13000563 is about 235.1368630857.

Adding to 13000563 its reverse (36500031), we get a palindrome (49500594).

The spelling of 13000563 in words is "thirteen million, five hundred sixty-three", and thus it is an aban number.