122664979 has 8 divisors (see below), whose sum is σ = 130241088. Its totient is φ = 115128960.

The previous prime is 122664973. The next prime is 122664991. The reversal of 122664979 is 979466221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122664979 - 2⁷ = 122664851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122664973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3592 + ... + 16069.

It is an arithmetic number, because the mean of its divisors is an integer number (16280136).

Almost surely, 2^122664979 is an apocalyptic number.

122664979 is a deficient number, since it is larger than the sum of its proper divisors (7576109).

122664979 is a wasteful number, since it uses less digits than its factorization.

122664979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20045.

The product of its digits is 326592, while the sum is 46.

The square root of 122664979 is about 11075.4222944319. The cubic root of 122664979 is about 496.8670489030.

The spelling of 122664979 in words is "one hundred twenty-two million, six hundred sixty-four thousand, nine hundred seventy-nine".