122756617 has 2 divisors, whose sum is σ = 122756618. Its totient is φ = 122756616.

The previous prime is 122756611. The next prime is 122756659. The reversal of 122756617 is 716657221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105083001 + 17673616 = 10251^2 + 4204^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122756617 is a prime.

It is not a weakly prime, because it can be changed into another prime (122756611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61378308 + 61378309.

It is an arithmetic number, because the mean of its divisors is an integer number (61378309).

Almost surely, 2^122756617 is an apocalyptic number.

It is an amenable number.

122756617 is a deficient number, since it is larger than the sum of its proper divisors (1).

122756617 is an equidigital number, since it uses as much as digits as its factorization.

122756617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 37.

The square root of 122756617 is about 11079.5585200855. The cubic root of 122756617 is about 496.9907478032.

The spelling of 122756617 in words is "one hundred twenty-two million, seven hundred fifty-six thousand, six hundred seventeen".