It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 990 013 767 is not a prime number.
For example, 990 013 767 can be divided by 3: 990 013 767 / 3 = 330 004 589.
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For 990 013 767 to be a prime number, it would have been required that 990 013 767 has only two divisors, i.e., itself and 1.
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990 013 767 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 990 013 767 is about 31 464.484.
Thus, the square root of 990 013 767 is not an integer, and therefore 990 013 767 is not a square number.
The square of a number (here 990 013 767) is the result of the product of this number (990 013 767) by itself (i.e., 990 013 767 × 990 013 767); the square of 990 013 767 is sometimes called "raising 990 013 767 to the power 2", or "990 013 767 squared".
The square of 990 013 767 is 980 127 258 849 530 240 because 990 013 767 × 990 013 767 = 990 013 7672 = 980 127 258 849 530 240.
As a consequence, 990 013 767 is the square root of 980 127 258 849 530 240.
990 013 767 is a number with 9 digits.
The multiples of 990 013 767 are all integers evenly divisible by 990 013 767, that is all numbers such that the remainder of the division by 990 013 767 is zero. There are infinitely many multiples of 990 013 767. The smallest multiples of 990 013 767 are: