A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 967176 can be evenly divided by 1 2 3 4 6 7 8 9 12 14 18 19 21 24 28 36 38 42 56 57 63 72 76 84 101 114 126 133 152 168 171 202 228 252 266 303 342 399 404 456 504 532 606 684 707 798 808 909 1,064 1,197 1,212 1,368 1,414 1,596 1,818 1,919 2,121 2,394 2,424 2,828 3,192 3,636 3,838 4,242 4,788 5,656 5,757 6,363 7,272 7,676 8,484 9,576 11,514 12,726 13,433 15,352 16,968 17,271 23,028 25,452 26,866 34,542 40,299 46,056 50,904 53,732 69,084 80,598 107,464 120,897 138,168 161,196 241,794 322,392 483,588 and 967,176, with no remainder.
Since 967,176 cannot be divided by just 1 and 967,176, it is not a prime number.