12613843 has 4 divisors (see below), whose sum is σ = 13760568. Its totient is φ = 11467120.

The previous prime is 12613837. The next prime is 12613871. The reversal of 12613843 is 34831621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12613843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12613823) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 573346 + ... + 573367.

It is an arithmetic number, because the mean of its divisors is an integer number (3440142).

Almost surely, 2^12613843 is an apocalyptic number.

12613843 is a deficient number, since it is larger than the sum of its proper divisors (1146725).

12613843 is a wasteful number, since it uses less digits than its factorization.

12613843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146724.

The product of its digits is 3456, while the sum is 28.

The square root of 12613843 is about 3551.5972463105. The cubic root of 12613843 is about 232.7818634190.

It can be divided in two parts, 12613 and 843, that added together give a square (13456 = 116²).

The spelling of 12613843 in words is "twelve million, six hundred thirteen thousand, eight hundred forty-three".