566666666665 has 32 divisors (see below), whose sum is σ = 768639196800. Its totient is φ = 397266616320.

The previous prime is 566666666609. The next prime is 566666666689.

566666666665 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 566666666665 - 2¹⁷ = 566666535593 is a prime.

It is a super-4 number, since 4×566666666665⁴ (a number of 48 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 566666666594 and 566666666603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 700329 + ... + 1274281.

It is an arithmetic number, because the mean of its divisors is an integer number (24019974900).

Almost surely, 2^566666666665 is an apocalyptic number.

566666666665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

566666666665 is a deficient number, since it is larger than the sum of its proper divisors (201972530135).

566666666665 is a wasteful number, since it uses less digits than its factorization.

566666666665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574617.

The product of its digits is 1511654400, while the sum is 70.

The spelling of 566666666665 in words is "five hundred sixty-six billion, six hundred sixty-six million, six hundred sixty-six thousand, six hundred sixty-five".