122656663 has 2 divisors, whose sum is σ = 122656664. Its totient is φ = 122656662.

The previous prime is 122656661. The next prime is 122656673. The reversal of 122656663 is 366656221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122656663 - 2¹ = 122656661 is a prime.

Together with 122656661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122656661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61328331 + 61328332.

It is an arithmetic number, because the mean of its divisors is an integer number (61328332).

Almost surely, 2^122656663 is an apocalyptic number.

122656663 is a deficient number, since it is larger than the sum of its proper divisors (1).

122656663 is an equidigital number, since it uses as much as digits as its factorization.

122656663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 37.

The square root of 122656663 is about 11075.0468622033. The cubic root of 122656663 is about 496.8558203796.

The spelling of 122656663 in words is "one hundred twenty-two million, six hundred fifty-six thousand, six hundred sixty-three".