12863563 has 4 divisors (see below), whose sum is σ = 12875200. Its totient is φ = 12851928.

The previous prime is 12863561. The next prime is 12863569. The reversal of 12863563 is 36536821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36536821 = 701 ⋅52121.

It is a cyclic number.

It is not a de Polignac number, because 12863563 - 2¹ = 12863561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12863561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3963 + ... + 6436.

It is an arithmetic number, because the mean of its divisors is an integer number (3218800).

Almost surely, 2^12863563 is an apocalyptic number.

12863563 is a deficient number, since it is larger than the sum of its proper divisors (11637).

12863563 is a wasteful number, since it uses less digits than its factorization.

12863563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11636.

The product of its digits is 25920, while the sum is 34.

The square root of 12863563 is about 3586.5809624209. The cubic root of 12863563 is about 234.3079868383.

The spelling of 12863563 in words is "twelve million, eight hundred sixty-three thousand, five hundred sixty-three".