It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 738 649 is not a prime number.
For example, 738 649 can be divided by 61: 738 649 / 61 = 12 109.
For 738 649 to be a prime number, it would have been required that 738 649 has only two divisors, i.e., itself and 1.
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738 649 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 738 649 is about 859.447.
Thus, the square root of 738 649 is not an integer, and therefore 738 649 is not a square number.
The square of a number (here 738 649) is the result of the product of this number (738 649) by itself (i.e., 738 649 × 738 649); the square of 738 649 is sometimes called "raising 738 649 to the power 2", or "738 649 squared".
The square of 738 649 is 545 602 345 201 because 738 649 × 738 649 = 738 6492 = 545 602 345 201.
As a consequence, 738 649 is the square root of 545 602 345 201.
The multiples of 738 649 are all integers evenly divisible by 738 649, that is all numbers such that the remainder of the division by 738 649 is zero. There are infinitely many multiples of 738 649. The smallest multiples of 738 649 are: