It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 998 722 is not a prime number.
For example, 998 722 can be divided by 2: 998 722 / 2 = 499 361.
For 998 722 to be a prime number, it would have been required that 998 722 has only two divisors, i.e., itself and 1.
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998 722 is an even number, because it is evenly divisible by 2: 998 722 / 2 = 499 361.
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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 998 722 is about 999.361.
Thus, the square root of 998 722 is not an integer, and therefore 998 722 is not a square number.
The square of a number (here 998 722) is the result of the product of this number (998 722) by itself (i.e., 998 722 × 998 722); the square of 998 722 is sometimes called "raising 998 722 to the power 2", or "998 722 squared".
The square of 998 722 is 997 445 633 284 because 998 722 × 998 722 = 998 7222 = 997 445 633 284.
As a consequence, 998 722 is the square root of 997 445 633 284.
The multiples of 998 722 are all integers evenly divisible by 998 722, that is all numbers such that the remainder of the division by 998 722 is zero. There are infinitely many multiples of 998 722. The smallest multiples of 998 722 are: