566666651 has 2 divisors, whose sum is σ = 566666652. Its totient is φ = 566666650.

The previous prime is 566666623. The next prime is 566666677. The reversal of 566666651 is 156666665.

566666651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 566666651 - 2¹⁸ = 566404507 is a prime.

It is a super-2 number, since 2×566666651² = 642222186711111602, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 566666596 and 566666605.

It is not a weakly prime, because it can be changed into another prime (566666251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 283333325 + 283333326.

It is an arithmetic number, because the mean of its divisors is an integer number (283333326).

Almost surely, 2^566666651 is an apocalyptic number.

566666651 is a deficient number, since it is larger than the sum of its proper divisors (1).

566666651 is an equidigital number, since it uses as much as digits as its factorization.

566666651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 47.

The square root of 566666651 is about 23804.7610994103. The cubic root of 566666651 is about 827.5150192447.

The spelling of 566666651 in words is "five hundred sixty-six million, six hundred sixty-six thousand, six hundred fifty-one".