Q: Is 671,776 a Prime Number?
A: No, 671,776 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 671776 can be evenly divided by 1 2 4 7 8 14 16 28 32 56 112 224 2,999 5,998 11,996 20,993 23,992 41,986 47,984 83,972 95,968 167,944 335,888 and 671,776, with no remainder.
Since 671,776 cannot be divided by just 1 and 671,776, it is not a prime number.