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0Free number properties checker: enter a number to find out if it is prime, even or odd, a perfect square, a perfect number, an Armstrong number, a Fibonacci number, and see its Collatz steps and digit sum.
Free number properties checker: enter a number to find out if it is prime, even or odd, a perfect square, a perfect number, an Armstrong number, a Fibonacci number, and see its Collatz steps and digit sum.