566986 has 8 divisors (see below), whose sum is σ = 972000. Its totient is φ = 242988.

The previous prime is 566977. The next prime is 566987. The reversal of 566986 is 689665.

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

It is a d-powerful number, because it can be written as 5 + 6² + 9⁴ + 6⁷ + 8³ + 6⁷ .

It is not an unprimeable number, because it can be changed into a prime (566987) by changing a digit.

566986 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20236 + ... + 20263.

It is an arithmetic number, because the mean of its divisors is an integer number (121500).

2⁵⁶⁶⁹⁸⁶ is an apocalyptic number.

566986 is a deficient number, since it is larger than the sum of its proper divisors (405014).

566986 is a wasteful number, since it uses less digits than its factorization.

566986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40508.

The product of its digits is 77760, while the sum is 40.

The square root of 566986 is about 752.9847276008. The cubic root of 566986 is about 82.7670440700.

The spelling of 566986 in words is "five hundred sixty-six thousand, nine hundred eighty-six".