122560657 has 2 divisors, whose sum is σ = 122560658. Its totient is φ = 122560656.

The previous prime is 122560619. The next prime is 122560661. The reversal of 122560657 is 756065221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71166096 + 51394561 = 8436^2 + 7169^2 .

It is a cyclic number.

It is not a de Polignac number, because 122560657 - 2²³ = 114172049 is a prime.

It is a super-2 number, since 2×122560657² = 30042229288543298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122560057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61280328 + 61280329.

It is an arithmetic number, because the mean of its divisors is an integer number (61280329).

Almost surely, 2^122560657 is an apocalyptic number.

It is an amenable number.

122560657 is a deficient number, since it is larger than the sum of its proper divisors (1).

122560657 is an equidigital number, since it uses as much as digits as its factorization.

122560657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 122560657 is about 11070.7116754073. The cubic root of 122560657 is about 496.7261533081.

The spelling of 122560657 in words is "one hundred twenty-two million, five hundred sixty thousand, six hundred fifty-seven".