It is possible to find out using mathematical methods whether a given integer is a prime number or not.
No, 166 474 477 is not a prime number.
For example, 166 474 477 can be divided by 13: 166 474 477 / 13 = 12 805 729.
For 166 474 477 to be a prime number, it would have been required that 166 474 477 has only two divisors, i.e., itself and 1.
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166 474 477 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 166 474 477 is about 12 902.499.
Thus, the square root of 166 474 477 is not an integer, and therefore 166 474 477 is not a square number.
The square of a number (here 166 474 477) is the result of the product of this number (166 474 477) by itself (i.e., 166 474 477 × 166 474 477); the square of 166 474 477 is sometimes called "raising 166 474 477 to the power 2", or "166 474 477 squared".
The square of 166 474 477 is 27 713 751 492 423 528 because 166 474 477 × 166 474 477 = 166 474 4772 = 27 713 751 492 423 528.
As a consequence, 166 474 477 is the square root of 27 713 751 492 423 528.
166 474 477 is a number with 9 digits.
The multiples of 166 474 477 are all integers evenly divisible by 166 474 477, that is all numbers such that the remainder of the division by 166 474 477 is zero. There are infinitely many multiples of 166 474 477. The smallest multiples of 166 474 477 are: