The places of the last 7 letters add up to
<font size='6' color='red'>73</font> = 6 + 1 + 22 + 5 + 1 + 20 + 18,
and values are evenly divisible by
<font size='6' color='red'>37</font>.
6 + 1 + 400 + 5 + 1 + 200 + 90 =
<font size='6' color='red'>37</font> x 19 = 
<font size='6' color='red'>7</font>0<font size='6' color='red'>3</font>
The place of all but the first letter, 2, is evenly divisible by
<font size='6' color='red'>37</font>. 37 * 8 = 296 = 298 - 2