It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 397 673 642 is not a prime number.
For example, 397 673 642 can be divided by 2: 397 673 642 / 2 = 198 836 821.
For 397 673 642 to be a prime number, it would have been required that 397 673 642 has only two divisors, i.e., itself and 1.
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397 673 642 is an even number, because it is evenly divisible by 2: 397 673 642 / 2 = 198 836 821.
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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 397 673 642 is about 19 941.756.
Thus, the square root of 397 673 642 is not an integer, and therefore 397 673 642 is not a square number.
The square of a number (here 397 673 642) is the result of the product of this number (397 673 642) by itself (i.e., 397 673 642 × 397 673 642); the square of 397 673 642 is sometimes called "raising 397 673 642 to the power 2", or "397 673 642 squared".
The square of 397 673 642 is 158 144 325 541 544 160 because 397 673 642 × 397 673 642 = 397 673 6422 = 158 144 325 541 544 160.
As a consequence, 397 673 642 is the square root of 158 144 325 541 544 160.
397 673 642 is a number with 9 digits.
The multiples of 397 673 642 are all integers evenly divisible by 397 673 642, that is all numbers such that the remainder of the division by 397 673 642 is zero. There are infinitely many multiples of 397 673 642. The smallest multiples of 397 673 642 are: