122506689 has 4 divisors (see below), whose sum is σ = 163342256. Its totient is φ = 81671124.

The previous prime is 122506621. The next prime is 122506693. The reversal of 122506689 is 986605221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 122506689 - 2⁹ = 122506177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122507689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20417779 + ... + 20417784.

It is an arithmetic number, because the mean of its divisors is an integer number (40835564).

Almost surely, 2^122506689 is an apocalyptic number.

It is an amenable number.

122506689 is a deficient number, since it is larger than the sum of its proper divisors (40835567).

122506689 is an equidigital number, since it uses as much as digits as its factorization.

122506689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40835566.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 122506689 is about 11068.2739846825. The cubic root of 122506689 is about 496.6532336251.

The spelling of 122506689 in words is "one hundred twenty-two million, five hundred six thousand, six hundred eighty-nine".