It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 801 629 is not a prime number.
For example, 801 629 can be divided by 19: 801 629 / 19 = 42 191.
For 801 629 to be a prime number, it would have been required that 801 629 has only two divisors, i.e., itself and 1.
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801 629 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 801 629 is about 895.337.
Thus, the square root of 801 629 is not an integer, and therefore 801 629 is not a square number.
The square of a number (here 801 629) is the result of the product of this number (801 629) by itself (i.e., 801 629 × 801 629); the square of 801 629 is sometimes called "raising 801 629 to the power 2", or "801 629 squared".
The square of 801 629 is 642 609 053 641 because 801 629 × 801 629 = 801 6292 = 642 609 053 641.
As a consequence, 801 629 is the square root of 642 609 053 641.
The multiples of 801 629 are all integers evenly divisible by 801 629, that is all numbers such that the remainder of the division by 801 629 is zero. There are infinitely many multiples of 801 629. The smallest multiples of 801 629 are: