12208665 has 16 divisors (see below), whose sum is σ = 22324608. Its totient is φ = 5581056.

The previous prime is 12208643. The next prime is 12208667. The reversal of 12208665 is 56680221.

It is not a de Polignac number, because 12208665 - 2⁹ = 12208153 is a prime.

It is a super-3 number, since 3×12208665³ (a number of 22 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12208667) 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 15 ways as a sum of consecutive naturals, for example, 58032 + ... + 58241.

It is an arithmetic number, because the mean of its divisors is an integer number (1395288).

Almost surely, 2^12208665 is an apocalyptic number.

12208665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12208665 is a deficient number, since it is larger than the sum of its proper divisors (10115943).

12208665 is a wasteful number, since it uses less digits than its factorization.

12208665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116288.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 12208665 is about 3494.0900102888. The cubic root of 12208665 is about 230.2622402690.

Adding to 12208665 its reverse (56680221), we get a palindrome (68888886).

The spelling of 12208665 in words is "twelve million, two hundred eight thousand, six hundred sixty-five".