566664 has 32 divisors (see below), whose sum is σ = 1619520. Its totient is φ = 161856.

The previous prime is 566659. The next prime is 566677. The reversal of 566664 is 466665.

It is a super-2 number, since 2×566664² = 642216177792, which contains 22 as substring.

It is a congruent number.

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, 1519 + ... + 1854.

It is an arithmetic number, because the mean of its divisors is an integer number (50610).

2⁵⁶⁶⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

566664 is an abundant number, since it is smaller than the sum of its proper divisors (1052856).

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

566664 is a wasteful number, since it uses less digits than its factorization.

566664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3389 (or 3385 counting only the distinct ones).

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

The square root of 566664 is about 752.7708814772. The cubic root of 566664 is about 82.7513728806.

Subtracting from 566664 its reverse (466665), we obtain a palindrome (99999).

The spelling of 566664 in words is "five hundred sixty-six thousand, six hundred sixty-four".