565603 has 2 divisors, whose sum is σ = 565604. Its totient is φ = 565602.

The previous prime is 565597. The next prime is 565613. The reversal of 565603 is 306565.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 565603 - 2⁵ = 565571 is a prime.

565603 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (565613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282801 + 282802.

It is an arithmetic number, because the mean of its divisors is an integer number (282802).

2⁵⁶⁵⁶⁰³ is an apocalyptic number.

565603 is a deficient number, since it is larger than the sum of its proper divisors (1).

565603 is an equidigital number, since it uses as much as digits as its factorization.

565603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 565603 is about 752.0658215874. The cubic root of 565603 is about 82.6996937780.

The spelling of 565603 in words is "five hundred sixty-five thousand, six hundred three".