It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 800 324 is not a prime number.
For example, 800 324 can be divided by 2: 800 324 / 2 = 400 162.
For 800 324 to be a prime number, it would have been required that 800 324 has only two divisors, i.e., itself and 1.
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800 324 is an even number, because it is evenly divisible by 2: 800 324 / 2 = 400 162.
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A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself. Here, the square root of 800 324 is about 894.608.
Thus, the square root of 800 324 is not an integer, and therefore 800 324 is not a square number.
The square of a number (here 800 324) is the result of the product of this number (800 324) by itself (i.e., 800 324 × 800 324); the square of 800 324 is sometimes called "raising 800 324 to the power 2", or "800 324 squared".
The square of 800 324 is 640 518 504 976 because 800 324 × 800 324 = 800 3242 = 640 518 504 976.
As a consequence, 800 324 is the square root of 640 518 504 976.
The multiples of 800 324 are all integers evenly divisible by 800 324, that is all numbers such that the remainder of the division by 800 324 is zero. There are infinitely many multiples of 800 324. The smallest multiples of 800 324 are: