566643 has 24 divisors (see below), whose sum is σ = 953344. Its totient is φ = 293040.

The previous prime is 566639. The next prime is 566653. The reversal of 566643 is 346665.

566643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 566643 - 2² = 566639 is a prime.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 566643.

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 23 ways as a sum of consecutive naturals, for example, 2430 + ... + 2652.

2⁵⁶⁶⁶⁴³ is an apocalyptic number.

566643 is a deficient number, since it is larger than the sum of its proper divisors (386701).

566643 is a wasteful number, since it uses less digits than its factorization.

566643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 244 counting only the distinct ones).

The product of its digits is 12960, while the sum is 30.

The square root of 566643 is about 752.7569328807. The cubic root of 566643 is about 82.7503506403.

The spelling of 566643 in words is "five hundred sixty-six thousand, six hundred forty-three".