940
736 640 x 0.15 = 96 and 640 + 96 = 736
No.
960
There's only one number that equals 640. The number is . . . . . 640.
640
It is a series number used by Yamaha for one of the thrones in their drum throne series. Thrones with a number higher than the 640 will most likely be a more robust or better style of throne. Numbers like these are usually only a quicker reference used by manufacturers to the description of a product.
If 1% of 640 is 6.4, than 55% of 640 is 352.
27 x 5 = 640
The brain
A composite number is any number greater than 1, which is non-prime: in other words, any number that can be divided by any whole number besides itself and 1. Since 640 can be divided by 2 (multiple times, in fact) and 5, it is indeed composite.
There are approximately 640 skeletal muscles in our bodies.
640 x 95% = 608