Q: Is 776,664 a Prime Number?
A: No, 776,664 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 776664 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 18 21 23 24 28 36 42 46 56 63 67 69 72 84 92 126 134 138 161 168 184 201 207 252 268 276 322 402 414 469 483 504 536 552 603 644 804 828 938 966 1,206 1,288 1,407 1,449 1,541 1,608 1,656 1,876 1,932 2,412 2,814 2,898 3,082 3,752 3,864 4,221 4,623 4,824 5,628 5,796 6,164 8,442 9,246 10,787 11,256 11,592 12,328 13,869 16,884 18,492 21,574 27,738 32,361 33,768 36,984 43,148 55,476 64,722 86,296 97,083 110,952 129,444 194,166 258,888 388,332 and 776,664, with no remainder.
Since 776,664 cannot be divided by just 1 and 776,664, it is not a prime number.