It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 3 309 616 is not a prime number.
For example, 3 309 616 can be divided by 2: 3 309 616 / 2 = 1 654 808.
For 3 309 616 to be a prime number, it would have been required that 3 309 616 has only two divisors, i.e., itself and 1.
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3 309 616 is an even number, because it is evenly divisible by 2: 3 309 616 / 2 = 1 654 808.
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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 3 309 616 is about 1 819.235.
Thus, the square root of 3 309 616 is not an integer, and therefore 3 309 616 is not a square number.
The square of a number (here 3 309 616) is the result of the product of this number (3 309 616) by itself (i.e., 3 309 616 × 3 309 616); the square of 3 309 616 is sometimes called "raising 3 309 616 to the power 2", or "3 309 616 squared".
The square of 3 309 616 is 10 953 558 067 456 because 3 309 616 × 3 309 616 = 3 309 6162 = 10 953 558 067 456.
As a consequence, 3 309 616 is the square root of 10 953 558 067 456.
The multiples of 3 309 616 are all integers evenly divisible by 3 309 616, that is all numbers such that the remainder of the division by 3 309 616 is zero. There are infinitely many multiples of 3 309 616. The smallest multiples of 3 309 616 are: