122655647 has 2 divisors, whose sum is σ = 122655648. Its totient is φ = 122655646.

The previous prime is 122655607. The next prime is 122655649. The reversal of 122655647 is 746556221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122655647 - 2¹⁴ = 122639263 is a prime.

Together with 122655649, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 122655647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122655649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61327823 + 61327824.

It is an arithmetic number, because the mean of its divisors is an integer number (61327824).

Almost surely, 2^122655647 is an apocalyptic number.

122655647 is a deficient number, since it is larger than the sum of its proper divisors (1).

122655647 is an equidigital number, since it uses as much as digits as its factorization.

122655647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100800, while the sum is 38.

The square root of 122655647 is about 11075.0009932279. Note that the first 3 decimals coincide. The cubic root of 122655647 is about 496.8544485098.

The spelling of 122655647 in words is "one hundred twenty-two million, six hundred fifty-five thousand, six hundred forty-seven".