566646 has 8 divisors (see below), whose sum is σ = 1133304. Its totient is φ = 188880.

The previous prime is 566639. The next prime is 566653. The reversal of 566646 is 646665.

566646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (566639) and next prime (566653).

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

566646 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47215 + ... + 47226.

It is an arithmetic number, because the mean of its divisors is an integer number (141663).

2⁵⁶⁶⁶⁴⁶ is an apocalyptic number.

566646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

566646 is a wasteful number, since it uses less digits than its factorization.

566646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94446.

The product of its digits is 25920, while the sum is 33.

The square root of 566646 is about 752.7589255532. The cubic root of 566646 is about 82.7504966762.

The spelling of 566646 in words is "five hundred sixty-six thousand, six hundred forty-six".