12813785 has 16 divisors (see below), whose sum is σ = 15909696. Its totient is φ = 9901248.

The previous prime is 12813761. The next prime is 12813791. The reversal of 12813785 is 58731821.

12813785 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12813785 - 2¹⁸ = 12551641 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22727 + ... + 23283.

It is an arithmetic number, because the mean of its divisors is an integer number (994356).

Almost surely, 2^12813785 is an apocalyptic number.

It is an amenable number.

12813785 is a deficient number, since it is larger than the sum of its proper divisors (3095911).

12813785 is a wasteful number, since it uses less digits than its factorization.

12813785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712.

The product of its digits is 13440, while the sum is 35.

The square root of 12813785 is about 3579.6347579048. The cubic root of 12813785 is about 234.0053630641.

The spelling of 12813785 in words is "twelve million, eight hundred thirteen thousand, seven hundred eighty-five".