12 of them.
The question is ambiguous. If you meant negative (64 squared), the value is -4096, which is a negative integer. If, instead, you meant (negative 64) squared, the value is +4096, a positive integer.
A prime number is a positive integer with two factors: one and the number itself. A squared number is any integer multiplied by itself. With the exception of 1, all squared numbers are composite.
Yes.
No.
perfect squares
64
Take any positive integer n. If you square it, and subtract 1, you get (x squared - 1). If you take (n - 1) and (n + 1), and multiply them together, you get n squared - n + n - 1, which is the same as (n squared - 1).
A squared number is the product of an integer times itself. So, 16 is a squared number. 4 * 4 = 16.
If you square 248, you already get an integer. No need to approximate anything.
[square root (78)] squared = 78. There is not a surd from for an integer.
The number 16 is an integer (a counting or whole number). It is also a positive number, and it is even. Additionally, it is a perfect square, as it is the product of 4 times 4 (which is 4 squared).
7 x 7=49 so that is the 17th square number