122828687 has 2 divisors, whose sum is σ = 122828688. Its totient is φ = 122828686.

The previous prime is 122828681. The next prime is 122828707. The reversal of 122828687 is 786828221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122828687 - 2²⁰ = 121780111 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122828681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61414343 + 61414344.

It is an arithmetic number, because the mean of its divisors is an integer number (61414344).

Almost surely, 2^122828687 is an apocalyptic number.

122828687 is a deficient number, since it is larger than the sum of its proper divisors (1).

122828687 is an equidigital number, since it uses as much as digits as its factorization.

122828687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 172032, while the sum is 44.

The square root of 122828687 is about 11082.8104287676. The cubic root of 122828687 is about 497.0879893119.

The spelling of 122828687 in words is "one hundred twenty-two million, eight hundred twenty-eight thousand, six hundred eighty-seven".