13868563 has 16 divisors (see below), whose sum is σ = 15261696. Its totient is φ = 12561120.

The previous prime is 13868551. The next prime is 13868567. The reversal of 13868563 is 36586831.

It is a cyclic number.

It is not a de Polignac number, because 13868563 - 2⁹ = 13868051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13868567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37606 + ... + 37972.

It is an arithmetic number, because the mean of its divisors is an integer number (953856).

Almost surely, 2^13868563 is an apocalyptic number.

13868563 is a deficient number, since it is larger than the sum of its proper divisors (1393133).

13868563 is a wasteful number, since it uses less digits than its factorization.

13868563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474.

The product of its digits is 103680, while the sum is 40.

The square root of 13868563 is about 3724.0519598953. The cubic root of 13868563 is about 240.2576111180.

The spelling of 13868563 in words is "thirteen million, eight hundred sixty-eight thousand, five hundred sixty-three".