866006573 has 2 divisors, whose sum is σ = 866006574. Its totient is φ = 866006572.

The previous prime is 866006539. The next prime is 866006629. The reversal of 866006573 is 375600668.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 476417929 + 389588644 = 21827^2 + 19738^2 .

It is a cyclic number.

It is not a de Polignac number, because 866006573 - 2⁶ = 866006509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 866006573.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (866006513) 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, 433003286 + 433003287.

It is an arithmetic number, because the mean of its divisors is an integer number (433003287).

Almost surely, 2^866006573 is an apocalyptic number.

It is an amenable number.

866006573 is a deficient number, since it is larger than the sum of its proper divisors (1).

866006573 is an equidigital number, since it uses as much as digits as its factorization.

866006573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 866006573 is about 29427.9896187286. The cubic root of 866006573 is about 953.1773842935.

The spelling of 866006573 in words is "eight hundred sixty-six million, six thousand, five hundred seventy-three".