12863385 has 24 divisors (see below), whose sum is σ = 23067720. Its totient is φ = 6623232.

The previous prime is 12863377. The next prime is 12863393. The reversal of 12863385 is 58336821.

12863385 is a `hidden beast` number, since 12 + 8 + 633 + 8 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (12863377) and next prime (12863393).

It can be written as a sum of positive squares in 4 ways, for example, as 898704 + 11964681 = 948^2 + 3459^2 .

It is not a de Polignac number, because 12863385 - 2³ = 12863377 is a prime.

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 3624 + ... + 6233.

It is an arithmetic number, because the mean of its divisors is an integer number (961155).

Almost surely, 2^12863385 is an apocalyptic number.

12863385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12863385 is a deficient number, since it is larger than the sum of its proper divisors (10204335).

12863385 is a wasteful number, since it uses less digits than its factorization.

12863385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9897 (or 9894 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 12863385 is about 3586.5561476157. The cubic root of 12863385 is about 234.3069060850.

The spelling of 12863385 in words is "twelve million, eight hundred sixty-three thousand, three hundred eighty-five".