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Organic-inorganic hybrid perovskite single crystals have gained attention as a promising optoelectronic material due to their exceptional structural perfection and low trap densities. In this study, MAPbBr 3 (Methylammonium lead bromide) single crystals were grown via inverse temperature crystallization under ambient circumstances. The powder XRD confirmed the cubic crystal structure with the Pm 3 ‾ m space group. The FTIR peak at 1424 cm−1 indicated bending vibrations in CH 3 NH 3 + cations attached to PbBr 3 structure. UV–visible spectroscopy revealed an absorption band edge at 574 nm, and photoluminescence analysis showed a green emission band at 375 nm excitation. The third-order non-linear optical (NLO) response was confirmed for the grown crystal using the Z-scan technique. Though substantial progress has been made in perovskite research, a gap remains in exploring their mechanical properties which were investigated using Meyer's law, HK law, and elastic-plastic deformation law along (010) and (100) crystallographic planes. Subsequently, these two crystallographic planes were used as photo-active material for photodetectors, demonstrating a remarkable sensitivity to the whole solar spectrum. [Display omitted] • MAPbBr 3 perovskite single crystals were prepared using inverse temperature crystallization. • Structural and optical properties were studied using characterizations such as XRD, FTIR, UV and PL. • Third harmonics study was undertaken using the Z-scan technique. • Crystal's hardness and photodetection characteristics were examined along its two crystallographic planes. • Multidimensional analysis of the crystal demonstrated its versatile usability along any orientation. [ABSTRACT FROM AUTHOR]