122666613 has 16 divisors (see below), whose sum is σ = 172730880. Its totient is φ = 77276144.

The previous prime is 122666591. The next prime is 122666617. The reversal of 122666613 is 316666221.

It is a cyclic number.

It is not a de Polignac number, because 122666613 - 2²⁰ = 121618037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122666617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4983 + ... + 16436.

It is an arithmetic number, because the mean of its divisors is an integer number (10795680).

Almost surely, 2^122666613 is an apocalyptic number.

It is an amenable number.

122666613 is a deficient number, since it is larger than the sum of its proper divisors (50064267).

122666613 is a wasteful number, since it uses less digits than its factorization.

122666613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21528.

The product of its digits is 15552, while the sum is 33.

The square root of 122666613 is about 11075.4960611252. The cubic root of 122666613 is about 496.8692551213.

The spelling of 122666613 in words is "one hundred twenty-two million, six hundred sixty-six thousand, six hundred thirteen".