122597665 has 4 divisors (see below), whose sum is σ = 147117204. Its totient is φ = 98078128.

The previous prime is 122597663. The next prime is 122597677. The reversal of 122597665 is 566795221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 566795221 = 17117 ⋅33113.

It can be written as a sum of positive squares in 2 ways, for example, as 28740321 + 93857344 = 5361^2 + 9688^2 .

It is a cyclic number.

It is not a de Polignac number, because 122597665 - 2¹ = 122597663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122597663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12259762 + ... + 12259771.

It is an arithmetic number, because the mean of its divisors is an integer number (36779301).

Almost surely, 2^122597665 is an apocalyptic number.

It is an amenable number.

122597665 is a deficient number, since it is larger than the sum of its proper divisors (24519539).

122597665 is an equidigital number, since it uses as much as digits as its factorization.

122597665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24519538.

The product of its digits is 226800, while the sum is 43.

The square root of 122597665 is about 11072.3829865120. The cubic root of 122597665 is about 496.7761448578.

The spelling of 122597665 in words is "one hundred twenty-two million, five hundred ninety-seven thousand, six hundred sixty-five".