566420873 has 2 divisors, whose sum is σ = 566420874. Its totient is φ = 566420872.

The previous prime is 566420783. The next prime is 566420887. The reversal of 566420873 is 378024665.

It is a happy number.

Together with previous prime (566420783) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 504137209 + 62283664 = 22453^2 + 7892^2 .

It is a cyclic number.

It is not a de Polignac number, because 566420873 - 2¹⁸ = 566158729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 566420873.

It is not a weakly prime, because it can be changed into another prime (566420893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 283210436 + 283210437.

It is an arithmetic number, because the mean of its divisors is an integer number (283210437).

Almost surely, 2^566420873 is an apocalyptic number.

It is an amenable number.

566420873 is a deficient number, since it is larger than the sum of its proper divisors (1).

566420873 is an equidigital number, since it uses as much as digits as its factorization.

566420873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 566420873 is about 23799.5981688767. The cubic root of 566420873 is about 827.3953637132.

The spelling of 566420873 in words is "five hundred sixty-six million, four hundred twenty thousand, eight hundred seventy-three".