Only the number 1.
64
Just 1
They both are not prime numbers
45 x .64 (64%) = 28.8
64/45 is in its simplest form.
45 multiplied by 64 is 2,880.
45 and 64 are not prime numbers because they both have more than two factors
45 and 19 are the numbers.
1
1.4222
45/64 is already in its simplest form