No. The one immediately below it is 81, and the next one above it is 100 .
87 squared is 7,569.
You cannot be serious ... Just in case you are, it's 87.
No, the number 87 is composite.
yes
87 is composite.
87 is, itself, a whole number.
Yes.
A number squared means that the number is multiplied by itself.
It is b*b
The result of a number multiplied by itself
87 is not a prime number because 87 is divisible by 3 and 29.
A squared number is the product of an integer times itself. So, 16 is a squared number. 4 * 4 = 16.