445216564 has 12 divisors (see below), whose sum is σ = 839062084. Its totient is φ = 205484544.

The previous prime is 445216559. The next prime is 445216567. The reversal of 445216564 is 465612544.

It can be written as a sum of positive squares in 2 ways, for example, as 26604964 + 418611600 = 5158^2 + 20460^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445216567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4280877 + ... + 4280980.

Almost surely, 2^445216564 is an apocalyptic number.

It is an amenable number.

445216564 is a deficient number, since it is larger than the sum of its proper divisors (393845520).

445216564 is a wasteful number, since it uses less digits than its factorization.

445216564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8561874 (or 8561872 counting only the distinct ones).

The product of its digits is 115200, while the sum is 37.

The square root of 445216564 is about 21100.1555444504. The cubic root of 445216564 is about 763.5845008257.

The spelling of 445216564 in words is "four hundred forty-five million, two hundred sixteen thousand, five hundred sixty-four".