It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 802 006 is not a prime number.
For example, 802 006 can be divided by 2: 802 006 / 2 = 401 003.
For 802 006 to be a prime number, it would have been required that 802 006 has only two divisors, i.e., itself and 1.
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802 006 is an even number, because it is evenly divisible by 2: 802 006 / 2 = 401 003.
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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 802 006 is about 895.548.
Thus, the square root of 802 006 is not an integer, and therefore 802 006 is not a square number.
The square of a number (here 802 006) is the result of the product of this number (802 006) by itself (i.e., 802 006 × 802 006); the square of 802 006 is sometimes called "raising 802 006 to the power 2", or "802 006 squared".
The square of 802 006 is 643 213 624 036 because 802 006 × 802 006 = 802 0062 = 643 213 624 036.
As a consequence, 802 006 is the square root of 643 213 624 036.
The multiples of 802 006 are all integers evenly divisible by 802 006, that is all numbers such that the remainder of the division by 802 006 is zero. There are infinitely many multiples of 802 006. The smallest multiples of 802 006 are: