563905 has 8 divisors (see below), whose sum is σ = 700200. Its totient is φ = 435456.

The previous prime is 563897. The next prime is 563929. The reversal of 563905 is 509365.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 106929 + 456976 = 327^2 + 676^2 .

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 563905 - 2³ = 563897 is a prime.

563905 is a lucky 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, 1800 + ... + 2089.

It is an arithmetic number, because the mean of its divisors is an integer number (87525).

2⁵⁶³⁹⁰⁵ is an apocalyptic number.

It is an amenable number.

563905 is a deficient number, since it is larger than the sum of its proper divisors (136295).

563905 is a wasteful number, since it uses less digits than its factorization.

563905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3923.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 563905 is about 750.9360824997. The cubic root of 563905 is about 82.6168530826.

The spelling of 563905 in words is "five hundred sixty-three thousand, nine hundred five".