563985 has 24 divisors (see below), whose sum is σ = 995904. Its totient is φ = 295200.

The previous prime is 563971. The next prime is 563987. The reversal of 563985 is 589365.

563985 is a `hidden beast` number, since 563 + 98 + 5 = 666.

It is not a de Polignac number, because 563985 - 2¹⁴ = 547601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (563987) 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, 3660 + ... + 3810.

It is an arithmetic number, because the mean of its divisors is an integer number (41496).

2⁵⁶³⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

563985 is a deficient number, since it is larger than the sum of its proper divisors (431919).

563985 is a wasteful number, since it uses less digits than its factorization.

563985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245 (or 242 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 563985 is about 750.9893474611. The cubic root of 563985 is about 82.6207597901.

The spelling of 563985 in words is "five hundred sixty-three thousand, nine hundred eighty-five".