563645 has 8 divisors (see below), whose sum is σ = 682080. Its totient is φ = 447120.

The previous prime is 563623. The next prime is 563657. The reversal of 563645 is 546365.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 563645 - 2¹⁰ = 562621 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290 + ... + 1100.

It is an arithmetic number, because the mean of its divisors is an integer number (85260).

2⁵⁶³⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

563645 is a deficient number, since it is larger than the sum of its proper divisors (118435).

563645 is a wasteful number, since it uses less digits than its factorization.

563645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955.

The product of its digits is 10800, while the sum is 29.

The square root of 563645 is about 750.7629452763. The cubic root of 563645 is about 82.6041537308.

The spelling of 563645 in words is "five hundred sixty-three thousand, six hundred forty-five".