In the following number series only one number is wrong. Find out the wrong number.
The pattern followed is :
2222 $$- 7^3$$ = 1879
1879Â $$- 6^3$$ =Â 1663
1663Â $$- 5^3$$ =Â 1538
1538Â $$- 4^3$$ =Â 1474
1474Â $$- 3^3$$ =Â 1447
1447Â $$- 2^3$$ = 1439 $$\neq 1440$$
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