566665 has 8 divisors (see below), whose sum is σ = 741888. Its totient is φ = 412080.

The previous prime is 566659. The next prime is 566677.

566665 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 566665 - 2⁵ = 566633 is a prime.

It is a super-2 number, since 2×566665² = 642218444450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 566665.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5097 + ... + 5206.

It is an arithmetic number, because the mean of its divisors is an integer number (92736).

2⁵⁶⁶⁶⁶⁵ is an apocalyptic number.

566665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

566665 is a deficient number, since it is larger than the sum of its proper divisors (175223).

566665 is a wasteful number, since it uses less digits than its factorization.

566665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10319.

The product of its digits is 32400, while the sum is 34.

The square root of 566665 is about 752.7715456897. The cubic root of 566665 is about 82.7514215581.

The spelling of 566665 in words is "five hundred sixty-six thousand, six hundred sixty-five".