It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 764 642 is not a prime number.
For example, 764 642 can be divided by 2: 764 642 / 2 = 382 321.
For 764 642 to be a prime number, it would have been required that 764 642 has only two divisors, i.e., itself and 1.
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764 642 is an even number, because it is evenly divisible by 2: 764 642 / 2 = 382 321.
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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 764 642 is about 874.438.
Thus, the square root of 764 642 is not an integer, and therefore 764 642 is not a square number.
The square of a number (here 764 642) is the result of the product of this number (764 642) by itself (i.e., 764 642 × 764 642); the square of 764 642 is sometimes called "raising 764 642 to the power 2", or "764 642 squared".
The square of 764 642 is 584 677 388 164 because 764 642 × 764 642 = 764 6422 = 584 677 388 164.
As a consequence, 764 642 is the square root of 584 677 388 164.
The multiples of 764 642 are all integers evenly divisible by 764 642, that is all numbers such that the remainder of the division by 764 642 is zero. There are infinitely many multiples of 764 642. The smallest multiples of 764 642 are: