563663644 has 12 divisors (see below), whose sum is σ = 987222600. Its totient is φ = 281600048.

The previous prime is 563663623. The next prime is 563663687. The reversal of 563663644 is 446366365.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 563663644.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52414 + ... + 62245.

It is an arithmetic number, because the mean of its divisors is an integer number (82268550).

Almost surely, 2^563663644 is an apocalyptic number.

It is an amenable number.

563663644 is a deficient number, since it is larger than the sum of its proper divisors (423558956).

563663644 is a wasteful number, since it uses less digits than its factorization.

563663644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115892 (or 115890 counting only the distinct ones).

The product of its digits is 933120, while the sum is 43.

The square root of 563663644 is about 23741.6015466522. The cubic root of 563663644 is about 826.0506450195.

The spelling of 563663644 in words is "five hundred sixty-three million, six hundred sixty-three thousand, six hundred forty-four".