12613865 has 8 divisors (see below), whose sum is σ = 16512768. Its totient is φ = 9173680.

The previous prime is 12613837. The next prime is 12613871. The reversal of 12613865 is 56831621.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-12613865 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114617 + ... + 114726.

It is an arithmetic number, because the mean of its divisors is an integer number (2064096).

Almost surely, 2^12613865 is an apocalyptic number.

It is an amenable number.

12613865 is a deficient number, since it is larger than the sum of its proper divisors (3898903).

12613865 is a wasteful number, since it uses less digits than its factorization.

12613865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229359.

The product of its digits is 8640, while the sum is 32.

The square root of 12613865 is about 3551.6003435071. The cubic root of 12613865 is about 232.7819987518.

The spelling of 12613865 in words is "twelve million, six hundred thirteen thousand, eight hundred sixty-five".