563965 has 8 divisors (see below), whose sum is σ = 682200. Its totient is φ = 447552.

The previous prime is 563947. The next prime is 563971. The reversal of 563965 is 569365.

It can be written as a sum of positive squares in 4 ways, for example, as 14884 + 549081 = 122^2 + 741^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 563965 - 2⁵ = 563933 is a prime.

563965 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 563965.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367 + ... + 1123.

It is an arithmetic number, because the mean of its divisors is an integer number (85275).

2⁵⁶³⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

563965 is a deficient number, since it is larger than the sum of its proper divisors (118235).

563965 is a wasteful number, since it uses less digits than its factorization.

563965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911.

The product of its digits is 24300, while the sum is 34.

The square root of 563965 is about 750.9760315749. The cubic root of 563965 is about 82.6197831479.

The spelling of 563965 in words is "five hundred sixty-three thousand, nine hundred sixty-five".