563668 has 24 divisors (see below), whose sum is σ = 1157184. Its totient is φ = 235200.

The previous prime is 563663. The next prime is 563723. The reversal of 563668 is 866365.

It is a super-2 number, since 2×563668² = 635443228448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (563663) 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, 903 + ... + 1393.

It is an arithmetic number, because the mean of its divisors is an integer number (48216).

2⁵⁶³⁶⁶⁸ 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 563668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (578592).

563668 is an abundant number, since it is smaller than the sum of its proper divisors (593516).

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

563668 is a wasteful number, since it uses less digits than its factorization.

563668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543 (or 541 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 563668 is about 750.7782628713. The cubic root of 563668 is about 82.6052772924.

The spelling of 563668 in words is "five hundred sixty-three thousand, six hundred sixty-eight".