566660 has 24 divisors (see below), whose sum is σ = 1232280. Its totient is φ = 218624.

The previous prime is 566659. The next prime is 566677. The reversal of 566660 is 66665.

566660 = T₃₅ + T₃₆ + ... + T₁₅₀.

It can be written as a sum of positive squares in 4 ways, for example, as 179776 + 386884 = 424^2 + 622^2 .

It is a super-2 number, since 2×566660² = 642207111200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92 + ... + 1068.

It is an arithmetic number, because the mean of its divisors is an integer number (51345).

2⁵⁶⁶⁶⁶⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 566660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (616140).

566660 is an abundant number, since it is smaller than the sum of its proper divisors (665620).

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

566660 is a wasteful number, since it uses less digits than its factorization.

566660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015 (or 1013 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 566660 is about 752.7682246216. The cubic root of 566660 is about 82.7511781701.

The spelling of 566660 in words is "five hundred sixty-six thousand, six hundred sixty".