It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 729 324 016 is not a prime number.
For example, 729 324 016 can be divided by 2: 729 324 016 / 2 = 364 662 008.
For 729 324 016 to be a prime number, it would have been required that 729 324 016 has only two divisors, i.e., itself and 1.
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729 324 016 is an even number, because it is evenly divisible by 2: 729 324 016 / 2 = 364 662 008.
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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 729 324 016 is about 27 006.000.
Thus, the square root of 729 324 016 is not an integer, and therefore 729 324 016 is not a square number.
The square of a number (here 729 324 016) is the result of the product of this number (729 324 016) by itself (i.e., 729 324 016 × 729 324 016); the square of 729 324 016 is sometimes called "raising 729 324 016 to the power 2", or "729 324 016 squared".
The square of 729 324 016 is 531 913 520 314 368 256 because 729 324 016 × 729 324 016 = 729 324 0162 = 531 913 520 314 368 256.
As a consequence, 729 324 016 is the square root of 531 913 520 314 368 256.
729 324 016 is a number with 9 digits.
The multiples of 729 324 016 are all integers evenly divisible by 729 324 016, that is all numbers such that the remainder of the division by 729 324 016 is zero. There are infinitely many multiples of 729 324 016. The smallest multiples of 729 324 016 are: