563643 has 6 divisors (see below), whose sum is σ = 814164. Its totient is φ = 375756.

The previous prime is 563623. The next prime is 563657. The reversal of 563643 is 346365.

It is not a de Polignac number, because 563643 - 2⁹ = 563131 is a prime.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (563623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31305 + ... + 31322.

It is an arithmetic number, because the mean of its divisors is an integer number (135694).

2⁵⁶³⁶⁴³ is an apocalyptic number.

563643 is a deficient number, since it is larger than the sum of its proper divisors (250521).

563643 is a wasteful number, since it uses less digits than its factorization.

563643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62633 (or 62630 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 563643 is about 750.7616132968. The cubic root of 563643 is about 82.6040560283.

The spelling of 563643 in words is "five hundred sixty-three thousand, six hundred forty-three".