122664865 has 8 divisors (see below), whose sum is σ = 153597888. Its totient is φ = 93865200.

The previous prime is 122664851. The next prime is 122664881. The reversal of 122664865 is 568466221.

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

It is not a de Polignac number, because 122664865 - 2⁵ = 122664833 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 533211 + ... + 533440.

It is an arithmetic number, because the mean of its divisors is an integer number (19199736).

Almost surely, 2^122664865 is an apocalyptic number.

It is an amenable number.

122664865 is a deficient number, since it is larger than the sum of its proper divisors (30933023).

122664865 is a wasteful number, since it uses less digits than its factorization.

122664865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066679.

The product of its digits is 138240, while the sum is 40.

The square root of 122664865 is about 11075.4171479001. The cubic root of 122664865 is about 496.8668949801.

The spelling of 122664865 in words is "one hundred twenty-two million, six hundred sixty-four thousand, eight hundred sixty-five".