25 × 43 × 406499
1, 2, 4, 8, 16, 32, 43, 86, 172, 344, 688, 1376, 406499, 812998, 1625996, 3251992, 6503984, 13007968, 17479457, 34958914, 69917828, 139835656, 279671312 and 559342624
No.
Its nearest Fibonacci number neighbors are 433494437 and 701408733.