It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 201 637 is not a prime number.
For example, 201 637 can be divided by 17: 201 637 / 17 = 11 861.
For 201 637 to be a prime number, it would have been required that 201 637 has only two divisors, i.e., itself and 1.
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201 637 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 201 637 is about 449.040.
Thus, the square root of 201 637 is not an integer, and therefore 201 637 is not a square number.
The square of a number (here 201 637) is the result of the product of this number (201 637) by itself (i.e., 201 637 × 201 637); the square of 201 637 is sometimes called "raising 201 637 to the power 2", or "201 637 squared".
The square of 201 637 is 40 657 479 769 because 201 637 × 201 637 = 201 6372 = 40 657 479 769.
As a consequence, 201 637 is the square root of 40 657 479 769.
The multiples of 201 637 are all integers evenly divisible by 201 637, that is all numbers such that the remainder of the division by 201 637 is zero. There are infinitely many multiples of 201 637. The smallest multiples of 201 637 are: