Nickel-62 is an isotope of nickel with 28 protons and 34 neutrons.
It is a stable isotope, and in fact has the highest nuclear binding energy of any known isotope (8.7946 Mev/nucleon).[1]
A general misconception attributes this fact to the isotope of iron-56.
This makes it an "end product" of many nuclear reactions throughout the Universe and accounts for the high relative abundance of nickel.
However if one looks only at the nuclei proper (without including the electron cloud), it has the third lowest mass per baryon (930.186 MeV) after Ni-60 (930.180 MeV) and Fe-56 (930.174 MeV) this last has the lowest of all nuclides; and just front Cr-52 (930.192 MeV) and Fe-58 (930.193 MeV).