It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 77 397 698 is not a prime number.
For example, 77 397 698 can be divided by 2: 77 397 698 / 2 = 38 698 849.
For 77 397 698 to be a prime number, it would have been required that 77 397 698 has only two divisors, i.e., itself and 1.
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77 397 698 is an even number, because it is evenly divisible by 2: 77 397 698 / 2 = 38 698 849.
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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 77 397 698 is about 8 797.596.
Thus, the square root of 77 397 698 is not an integer, and therefore 77 397 698 is not a square number.
The square of a number (here 77 397 698) is the result of the product of this number (77 397 698) by itself (i.e., 77 397 698 × 77 397 698); the square of 77 397 698 is sometimes called "raising 77 397 698 to the power 2", or "77 397 698 squared".
The square of 77 397 698 is 5 990 403 655 699 204 because 77 397 698 × 77 397 698 = 77 397 6982 = 5 990 403 655 699 204.
As a consequence, 77 397 698 is the square root of 5 990 403 655 699 204.
77 397 698 is a number with 8 digits.
The multiples of 77 397 698 are all integers evenly divisible by 77 397 698, that is all numbers such that the remainder of the division by 77 397 698 is zero. There are infinitely many multiples of 77 397 698. The smallest multiples of 77 397 698 are: