445866563 has 2 divisors, whose sum is σ = 445866564. Its totient is φ = 445866562.

The previous prime is 445866529. The next prime is 445866623. The reversal of 445866563 is 365668544.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445866563 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (445866763) 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, 222933281 + 222933282.

It is an arithmetic number, because the mean of its divisors is an integer number (222933282).

Almost surely, 2^445866563 is an apocalyptic number.

445866563 is a deficient number, since it is larger than the sum of its proper divisors (1).

445866563 is an equidigital number, since it uses as much as digits as its factorization.

445866563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2073600, while the sum is 47.

The square root of 445866563 is about 21115.5526330712. The cubic root of 445866563 is about 763.9559214311.

The spelling of 445866563 in words is "four hundred forty-five million, eight hundred sixty-six thousand, five hundred sixty-three".