It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 988 574 is not a prime number.
For example, 988 574 can be divided by 2: 988 574 / 2 = 494 287.
For 988 574 to be a prime number, it would have been required that 988 574 has only two divisors, i.e., itself and 1.
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988 574 is an even number, because it is evenly divisible by 2: 988 574 / 2 = 494 287.
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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 988 574 is about 994.271.
Thus, the square root of 988 574 is not an integer, and therefore 988 574 is not a square number.
The square of a number (here 988 574) is the result of the product of this number (988 574) by itself (i.e., 988 574 × 988 574); the square of 988 574 is sometimes called "raising 988 574 to the power 2", or "988 574 squared".
The square of 988 574 is 977 278 553 476 because 988 574 × 988 574 = 988 5742 = 977 278 553 476.
As a consequence, 988 574 is the square root of 977 278 553 476.
The multiples of 988 574 are all integers evenly divisible by 988 574, that is all numbers such that the remainder of the division by 988 574 is zero. There are infinitely many multiples of 988 574. The smallest multiples of 988 574 are: