122864665 has 16 divisors (see below), whose sum is σ = 183818880. Its totient is φ = 76590720.

The previous prime is 122864663. The next prime is 122864701. The reversal of 122864665 is 566468221.

It is not a de Polignac number, because 122864665 - 2¹ = 122864663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122864663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159180 + ... + 159949.

It is an arithmetic number, because the mean of its divisors is an integer number (11488680).

Almost surely, 2^122864665 is an apocalyptic number.

It is an amenable number.

122864665 is a deficient number, since it is larger than the sum of its proper divisors (60954215).

122864665 is a wasteful number, since it uses less digits than its factorization.

122864665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319152.

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

The square root of 122864665 is about 11084.4334541735. The cubic root of 122864665 is about 497.1365189245.

The spelling of 122864665 in words is "one hundred twenty-two million, eight hundred sixty-four thousand, six hundred sixty-five".