12185797 has 8 divisors (see below), whose sum is σ = 13169016. Its totient is φ = 11209152.

The previous prime is 12185779. The next prime is 12185809. The reversal of 12185797 is 79758121.

It can be written as a sum of positive squares in 4 ways, for example, as 720801 + 11464996 = 849^2 + 3386^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12185797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12185497) 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 7 ways as a sum of consecutive naturals, for example, 2643 + ... + 5599.

It is an arithmetic number, because the mean of its divisors is an integer number (1646127).

Almost surely, 2^12185797 is an apocalyptic number.

It is an amenable number.

12185797 is a deficient number, since it is larger than the sum of its proper divisors (983219).

12185797 is a wasteful number, since it uses less digits than its factorization.

12185797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3287.

The product of its digits is 35280, while the sum is 40.

The square root of 12185797 is about 3490.8160936950. The cubic root of 12185797 is about 230.1183826614.

The spelling of 12185797 in words is "twelve million, one hundred eighty-five thousand, seven hundred ninety-seven".