563646366 has 12 divisors (see below), whose sum is σ = 1221233832. Its totient is φ = 187882116.

The previous prime is 563646341. The next prime is 563646401. The reversal of 563646366 is 663646365.

It is a happy number.

563646366 is a `hidden beast` number, since 5 + 6 + 3 + 6 + 4 + 636 + 6 = 666.

563646366 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15656826 + ... + 15656861.

It is an arithmetic number, because the mean of its divisors is an integer number (101769486).

Almost surely, 2^563646366 is an apocalyptic number.

563646366 is an abundant number, since it is smaller than the sum of its proper divisors (657587466).

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

563646366 is a wasteful number, since it uses less digits than its factorization.

563646366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31313695 (or 31313692 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 45.

The square root of 563646366 is about 23741.2376678218. The cubic root of 563646366 is about 826.0422046142.

Subtracting 563646366 from its reverse (663646365), we obtain a palindrome (99999999).

The spelling of 563646366 in words is "five hundred sixty-three million, six hundred forty-six thousand, three hundred sixty-six".