566820473 has 2 divisors, whose sum is σ = 566820474. Its totient is φ = 566820472.

The previous prime is 566820451. The next prime is 566820481. The reversal of 566820473 is 374028665.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 511347769 + 55472704 = 22613^2 + 7448^2 .

It is a cyclic number.

It is not a de Polignac number, because 566820473 - 2¹² = 566816377 is a prime.

It is a super-3 number, since 3×566820473³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 566820473.

It is not a weakly prime, because it can be changed into another prime (566820403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 283410236 + 283410237.

It is an arithmetic number, because the mean of its divisors is an integer number (283410237).

Almost surely, 2^566820473 is an apocalyptic number.

It is an amenable number.

566820473 is a deficient number, since it is larger than the sum of its proper divisors (1).

566820473 is an equidigital number, since it uses as much as digits as its factorization.

566820473 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 566820473 is about 23807.9917884730. The cubic root of 566820473 is about 827.5898889523.

The spelling of 566820473 in words is "five hundred sixty-six million, eight hundred twenty thousand, four hundred seventy-three".