563536566 has 48 divisors (see below), whose sum is σ = 1259557728. Its totient is φ = 181958400.

The previous prime is 563536541. The next prime is 563536573. The reversal of 563536566 is 665635365.

563536566 is a `hidden beast` number, since 5 + 63 + 536 + 56 + 6 = 666.

563536566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×563536566² = 635146922438144712, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 158751 + ... + 162261.

It is an arithmetic number, because the mean of its divisors is an integer number (26240786).

Almost surely, 2^563536566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 563536566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (629778864).

563536566 is an abundant number, since it is smaller than the sum of its proper divisors (696021162).

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

563536566 is a wasteful number, since it uses less digits than its factorization.

563536566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3797 (or 3794 counting only the distinct ones).

The product of its digits is 1458000, while the sum is 45.

The square root of 563536566 is about 23738.9251230969. The cubic root of 563536566 is about 825.9885626324.

The spelling of 563536566 in words is "five hundred sixty-three million, five hundred thirty-six thousand, five hundred sixty-six".