It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 738 646 is not a prime number.
For example, 738 646 can be divided by 2: 738 646 / 2 = 369 323.
For 738 646 to be a prime number, it would have been required that 738 646 has only two divisors, i.e., itself and 1.
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738 646 is an even number, because it is evenly divisible by 2: 738 646 / 2 = 369 323.
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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 738 646 is about 859.445.
Thus, the square root of 738 646 is not an integer, and therefore 738 646 is not a square number.
The square of a number (here 738 646) is the result of the product of this number (738 646) by itself (i.e., 738 646 × 738 646); the square of 738 646 is sometimes called "raising 738 646 to the power 2", or "738 646 squared".
The square of 738 646 is 545 597 913 316 because 738 646 × 738 646 = 738 6462 = 545 597 913 316.
As a consequence, 738 646 is the square root of 545 597 913 316.
The multiples of 738 646 are all integers evenly divisible by 738 646, that is all numbers such that the remainder of the division by 738 646 is zero. There are infinitely many multiples of 738 646. The smallest multiples of 738 646 are: