It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 137 674 is not a prime number.
For example, 137 674 can be divided by 2: 137 674 / 2 = 68 837.
For 137 674 to be a prime number, it would have been required that 137 674 has only two divisors, i.e., itself and 1.
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137 674 is an even number, because it is evenly divisible by 2: 137 674 / 2 = 68 837.
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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 137 674 is about 371.044.
Thus, the square root of 137 674 is not an integer, and therefore 137 674 is not a square number.
The square of a number (here 137 674) is the result of the product of this number (137 674) by itself (i.e., 137 674 × 137 674); the square of 137 674 is sometimes called "raising 137 674 to the power 2", or "137 674 squared".
The square of 137 674 is 18 954 130 276 because 137 674 × 137 674 = 137 6742 = 18 954 130 276.
As a consequence, 137 674 is the square root of 18 954 130 276.
The multiples of 137 674 are all integers evenly divisible by 137 674, that is all numbers such that the remainder of the division by 137 674 is zero. There are infinitely many multiples of 137 674. The smallest multiples of 137 674 are: