563456863 has 4 divisors (see below), whose sum is σ = 582886440. Its totient is φ = 544027288.

The previous prime is 563456843. The next prime is 563456867. The reversal of 563456863 is 368654365.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 563456863 - 2²⁵ = 529902431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (563456867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9714745 + ... + 9714802.

It is an arithmetic number, because the mean of its divisors is an integer number (145721610).

Almost surely, 2^563456863 is an apocalyptic number.

563456863 is a deficient number, since it is larger than the sum of its proper divisors (19429577).

563456863 is a wasteful number, since it uses less digits than its factorization.

563456863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19429576.

The product of its digits is 1555200, while the sum is 46.

The square root of 563456863 is about 23737.2463230258. The cubic root of 563456863 is about 825.9496199537.

The spelling of 563456863 in words is "five hundred sixty-three million, four hundred fifty-six thousand, eight hundred sixty-three".