12196665 has 24 divisors (see below), whose sum is σ = 22768200. Its totient is φ = 6004224.

The previous prime is 12196663. The next prime is 12196669. The reversal of 12196665 is 56669121.

It can be written as a sum of positive squares in 4 ways, for example, as 1679616 + 10517049 = 1296^2 + 3243^2 .

It is not a de Polignac number, because 12196665 - 2¹ = 12196663 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12196661) 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 23 ways as a sum of consecutive naturals, for example, 9840 + ... + 11009.

It is an arithmetic number, because the mean of its divisors is an integer number (948675).

Almost surely, 2^12196665 is an apocalyptic number.

12196665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12196665 is a deficient number, since it is larger than the sum of its proper divisors (10571535).

12196665 is a wasteful number, since it uses less digits than its factorization.

12196665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20873 (or 20870 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 12196665 is about 3492.3724028230. The cubic root of 12196665 is about 230.1867733040.

The spelling of 12196665 in words is "twelve million, one hundred ninety-six thousand, six hundred sixty-five".