It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 2 597 009 is not a prime number.
For example, 2 597 009 can be divided by 1 307: 2 597 009 / 1307 = 1 987.
For 2 597 009 to be a prime number, it would have been required that 2 597 009 has only two divisors, i.e., itself and 1.
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2 597 009 is an odd number, because it is not evenly divisible by 2.
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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 2 597 009 is about 1 611.524.
Thus, the square root of 2 597 009 is not an integer, and therefore 2 597 009 is not a square number.
The square of a number (here 2 597 009) is the result of the product of this number (2 597 009) by itself (i.e., 2 597 009 × 2 597 009); the square of 2 597 009 is sometimes called "raising 2 597 009 to the power 2", or "2 597 009 squared".
The square of 2 597 009 is 6 744 455 746 081 because 2 597 009 × 2 597 009 = 2 597 0092 = 6 744 455 746 081.
As a consequence, 2 597 009 is the square root of 6 744 455 746 081.
The multiples of 2 597 009 are all integers evenly divisible by 2 597 009, that is all numbers such that the remainder of the division by 2 597 009 is zero. There are infinitely many multiples of 2 597 009. The smallest multiples of 2 597 009 are: