It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 777 004 is not a prime number.
For example, 777 004 can be divided by 2: 777 004 / 2 = 388 502.
For 777 004 to be a prime number, it would have been required that 777 004 has only two divisors, i.e., itself and 1.
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777 004 is an even number, because it is evenly divisible by 2: 777 004 / 2 = 388 502.
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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 777 004 is about 881.478.
Thus, the square root of 777 004 is not an integer, and therefore 777 004 is not a square number.
The square of a number (here 777 004) is the result of the product of this number (777 004) by itself (i.e., 777 004 × 777 004); the square of 777 004 is sometimes called "raising 777 004 to the power 2", or "777 004 squared".
The square of 777 004 is 603 735 216 016 because 777 004 × 777 004 = 777 0042 = 603 735 216 016.
As a consequence, 777 004 is the square root of 603 735 216 016.
The multiples of 777 004 are all integers evenly divisible by 777 004, that is all numbers such that the remainder of the division by 777 004 is zero. There are infinitely many multiples of 777 004. The smallest multiples of 777 004 are: