566603 has 4 divisors (see below), whose sum is σ = 572208. Its totient is φ = 561000.

The previous prime is 566567. The next prime is 566617. The reversal of 566603 is 306665.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 306665 = 5 ⋅61333.

It is a cyclic number.

It is not a de Polignac number, because 566603 - 2⁶ = 566539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (566633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2648 + ... + 2853.

It is an arithmetic number, because the mean of its divisors is an integer number (143052).

2⁵⁶⁶⁶⁰³ is an apocalyptic number.

566603 is a deficient number, since it is larger than the sum of its proper divisors (5605).

566603 is a wasteful number, since it uses less digits than its factorization.

566603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5604.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 566603 is about 752.7303634104. The cubic root of 566603 is about 82.7484034461.

The spelling of 566603 in words is "five hundred sixty-six thousand, six hundred three".