12886785 has 24 divisors (see below), whose sum is σ = 23310144. Its totient is φ = 6573600.

The previous prime is 12886781. The next prime is 12886843. The reversal of 12886785 is 58768821.

It is not a de Polignac number, because 12886785 - 2² = 12886781 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 12886785.

It is not an unprimeable number, because it can be changed into a prime (12886781) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5191 + ... + 7260.

It is an arithmetic number, because the mean of its divisors is an integer number (971256).

Almost surely, 2^12886785 is an apocalyptic number.

12886785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12886785 is a deficient number, since it is larger than the sum of its proper divisors (10423359).

12886785 is a wasteful number, since it uses less digits than its factorization.

12886785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12485 (or 12482 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The square root of 12886785 is about 3589.8168476957. The cubic root of 12886785 is about 234.4488972315.

The spelling of 12886785 in words is "twelve million, eight hundred eighty-six thousand, seven hundred eighty-five".