12660915 has 8 divisors (see below), whose sum is σ = 20257488. Its totient is φ = 6752480.

The previous prime is 12660911. The next prime is 12660917. The reversal of 12660915 is 51906621.

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

It is not a de Polignac number, because 12660915 - 2² = 12660911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12660911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422016 + ... + 422045.

It is an arithmetic number, because the mean of its divisors is an integer number (2532186).

Almost surely, 2^12660915 is an apocalyptic number.

12660915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12660915 is a deficient number, since it is larger than the sum of its proper divisors (7596573).

12660915 is an equidigital number, since it uses as much as digits as its factorization.

12660915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844069.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 12660915 is about 3558.2179528522. The cubic root of 12660915 is about 233.0710670015.

The spelling of 12660915 in words is "twelve million, six hundred sixty thousand, nine hundred fifteen".