It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 340 006 is not a prime number.
For example, 340 006 can be divided by 2: 340 006 / 2 = 170 003.
For 340 006 to be a prime number, it would have been required that 340 006 has only two divisors, i.e., itself and 1.
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340 006 is an even number, because it is evenly divisible by 2: 340 006 / 2 = 170 003.
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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 340 006 is about 583.100.
Thus, the square root of 340 006 is not an integer, and therefore 340 006 is not a square number.
The square of a number (here 340 006) is the result of the product of this number (340 006) by itself (i.e., 340 006 × 340 006); the square of 340 006 is sometimes called "raising 340 006 to the power 2", or "340 006 squared".
The square of 340 006 is 115 604 080 036 because 340 006 × 340 006 = 340 0062 = 115 604 080 036.
As a consequence, 340 006 is the square root of 115 604 080 036.
The multiples of 340 006 are all integers evenly divisible by 340 006, that is all numbers such that the remainder of the division by 340 006 is zero. There are infinitely many multiples of 340 006. The smallest multiples of 340 006 are: