563816 has 32 divisors (see below), whose sum is σ = 1188000. Its totient is φ = 248640.

The previous prime is 563813. The next prime is 563821. The reversal of 563816 is 618365.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (563813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3710 + ... + 3858.

It is an arithmetic number, because the mean of its divisors is an integer number (37125).

2⁵⁶³⁸¹⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 563816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (594000).

563816 is an abundant number, since it is smaller than the sum of its proper divisors (624184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

563816 is a wasteful number, since it uses less digits than its factorization.

563816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 205 counting only the distinct ones).

The product of its digits is 4320, while the sum is 29.

The square root of 563816 is about 750.8768207902. The cubic root of 563816 is about 82.6125064363.

The spelling of 563816 in words is "five hundred sixty-three thousand, eight hundred sixteen".