各位大佬，刚学mma,请问一直报错是为啥

level 1

a = 100;
b = 10;
d = 0.00013544;
c = 0.001;
NDSolve[{x'[t] == a - b - c x[t] - (a - b - c x[t]) e^(d x[t] - 1),
x[0] == 3691.7}, x[t], {t, 0, 1000000}]