12660158 has 8 divisors (see below), whose sum is σ = 21703152. Its totient is φ = 5425776.

The previous prime is 12660157. The next prime is 12660169. The reversal of 12660158 is 85106621.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12660158.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12660157) 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, 452135 + ... + 452162.

It is an arithmetic number, because the mean of its divisors is an integer number (2712894).

Almost surely, 2^12660158 is an apocalyptic number.

12660158 is a deficient number, since it is larger than the sum of its proper divisors (9042994).

12660158 is an equidigital number, since it uses as much as digits as its factorization.

12660158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904306.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 12660158 is about 3558.1115777895. Note that the first 3 decimals coincide. The cubic root of 12660158 is about 233.0664217786.

Adding to 12660158 its reverse (85106621), we get a palindrome (97766779).

The spelling of 12660158 in words is "twelve million, six hundred sixty thousand, one hundred fifty-eight".