12865513 has 8 divisors (see below), whose sum is σ = 13265280. Its totient is φ = 12469920.

The previous prime is 12865499. The next prime is 12865519. The reversal of 12865513 is 31556821.

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

It is a cyclic number.

It is not a de Polignac number, because 12865513 - 2⁹ = 12865001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12865519) 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, 5908 + ... + 7786.

It is an arithmetic number, because the mean of its divisors is an integer number (1658160).

Almost surely, 2^12865513 is an apocalyptic number.

It is an amenable number.

12865513 is a deficient number, since it is larger than the sum of its proper divisors (399767).

12865513 is a wasteful number, since it uses less digits than its factorization.

12865513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2087.

The product of its digits is 7200, while the sum is 31.

The square root of 12865513 is about 3586.8527987638. The cubic root of 12865513 is about 234.3198258984.

The spelling of 12865513 in words is "twelve million, eight hundred sixty-five thousand, five hundred thirteen".