122065665 has 32 divisors (see below), whose sum is σ = 199065600. Its totient is φ = 63860160.

The previous prime is 122065663. The next prime is 122065679. The reversal of 122065665 is 566560221.

It is a happy number.

It is not a de Polignac number, because 122065665 - 2¹ = 122065663 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (122065663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 283000 + ... + 283430.

It is an arithmetic number, because the mean of its divisors is an integer number (6220800).

Almost surely, 2^122065665 is an apocalyptic number.

122065665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122065665 is a deficient number, since it is larger than the sum of its proper divisors (76999935).

122065665 is a wasteful number, since it uses less digits than its factorization.

122065665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 122065665 is about 11048.3331321969. Note that the first 3 decimals coincide. The cubic root of 122065665 is about 496.0565332392.

It can be divided in two parts, 12206 and 5665, that added together give a palindrome (17871).

The spelling of 122065665 in words is "one hundred twenty-two million, sixty-five thousand, six hundred sixty-five".