563864 has 16 divisors (see below), whose sum is σ = 1208400. Its totient is φ = 241632.

The previous prime is 563851. The next prime is 563869. The reversal of 563864 is 468365.

563864 is nontrivially palindromic in base 16.

563864 is an esthetic number in base 16, because in such base its adjacent digits differ by 1.

It is a super-2 number, since 2×563864² = 635885220992, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 563864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (563869) by changing a digit.

563864 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4979 + ... + 5090.

It is an arithmetic number, because the mean of its divisors is an integer number (75525).

2⁵⁶³⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

563864 is an abundant number, since it is smaller than the sum of its proper divisors (644536).

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

563864 is a wasteful number, since it uses less digits than its factorization.

563864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10082 (or 10078 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 563864 is about 750.9087827426. The cubic root of 563864 is about 82.6148507518.

The spelling of 563864 in words is "five hundred sixty-three thousand, eight hundred sixty-four".