It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 988 668 is not a prime number.
For example, 988 668 can be divided by 2: 988 668 / 2 = 494 334.
For 988 668 to be a prime number, it would have been required that 988 668 has only two divisors, i.e., itself and 1.
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988 668 is an even number, because it is evenly divisible by 2: 988 668 / 2 = 494 334.
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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 988 668 is about 994.318.
Thus, the square root of 988 668 is not an integer, and therefore 988 668 is not a square number.
The square of a number (here 988 668) is the result of the product of this number (988 668) by itself (i.e., 988 668 × 988 668); the square of 988 668 is sometimes called "raising 988 668 to the power 2", or "988 668 squared".
The square of 988 668 is 977 464 414 224 because 988 668 × 988 668 = 988 6682 = 977 464 414 224.
As a consequence, 988 668 is the square root of 977 464 414 224.
The multiples of 988 668 are all integers evenly divisible by 988 668, that is all numbers such that the remainder of the division by 988 668 is zero. There are infinitely many multiples of 988 668. The smallest multiples of 988 668 are: