Q: Is 3,603,661 a Prime Number?
A: No, 3,603,661 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 3603661 can be evenly divided by 1 59 103 593 6,077 34,987 61,079 and 3,603,661, with no remainder.
Since 3,603,661 cannot be divided by just 1 and 3,603,661, it is not a prime number.