It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 616 338 is not a prime number.
For example, 616 338 can be divided by 2: 616 338 / 2 = 308 169.
For 616 338 to be a prime number, it would have been required that 616 338 has only two divisors, i.e., itself and 1.
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616 338 is an even number, because it is evenly divisible by 2: 616 338 / 2 = 308 169.
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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 616 338 is about 785.072.
Thus, the square root of 616 338 is not an integer, and therefore 616 338 is not a square number.
The square of a number (here 616 338) is the result of the product of this number (616 338) by itself (i.e., 616 338 × 616 338); the square of 616 338 is sometimes called "raising 616 338 to the power 2", or "616 338 squared".
The square of 616 338 is 379 872 530 244 because 616 338 × 616 338 = 616 3382 = 379 872 530 244.
As a consequence, 616 338 is the square root of 379 872 530 244.
The multiples of 616 338 are all integers evenly divisible by 616 338, that is all numbers such that the remainder of the division by 616 338 is zero. There are infinitely many multiples of 616 338. The smallest multiples of 616 338 are: