An electromechanical resonator including: at least one deformable element, and at least one electrode that simultaneously supplies, to the at least one deformable element, at least one first actuating force at a first frequency, and a second actuating force at a second frequency, the first and the second frequencies creating at least two simultaneous resonances with a primary resonance at a frequency ω0 equal to the first frequency and the second frequency being equal to a subharmonic resonant frequency (kω0, with k>1) of the resonator, or to a superharmonic resonant frequency (ω0/k, with k>1).