It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 998 748 is not a prime number.
For example, 998 748 can be divided by 2: 998 748 / 2 = 499 374.
For 998 748 to be a prime number, it would have been required that 998 748 has only two divisors, i.e., itself and 1.
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998 748 is an even number, because it is evenly divisible by 2: 998 748 / 2 = 499 374.
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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 998 748 is about 999.374.
Thus, the square root of 998 748 is not an integer, and therefore 998 748 is not a square number.
The square of a number (here 998 748) is the result of the product of this number (998 748) by itself (i.e., 998 748 × 998 748); the square of 998 748 is sometimes called "raising 998 748 to the power 2", or "998 748 squared".
The square of 998 748 is 997 497 567 504 because 998 748 × 998 748 = 998 7482 = 997 497 567 504.
As a consequence, 998 748 is the square root of 997 497 567 504.
The multiples of 998 748 are all integers evenly divisible by 998 748, that is all numbers such that the remainder of the division by 998 748 is zero. There are infinitely many multiples of 998 748. The smallest multiples of 998 748 are: