12686884 has 30 divisors (see below), whose sum is σ = 25920454. Its totient is φ = 5433120.

The previous prime is 12686881. The next prime is 12686887. The reversal of 12686884 is 48868621.

It is an interprime number because it is at equal distance from previous prime (12686881) and next prime (12686887).

It can be written as a sum of positive squares in only one way, i.e., 12446784 + 240100 = 3528^2 + 490^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12686884.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12686881) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8944 + ... + 10264.

Almost surely, 2^12686884 is an apocalyptic number.

12686884 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12686884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12960227).

12686884 is an abundant number, since it is smaller than the sum of its proper divisors (13233570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12686884 is an equidigital number, since it uses as much as digits as its factorization.

12686884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353 (or 1330 counting only the distinct ones).

The product of its digits is 147456, while the sum is 43.

The square root of 12686884 is about 3561.8652416957. The cubic root of 12686884 is about 233.2303100746.

The spelling of 12686884 in words is "twelve million, six hundred eighty-six thousand, eight hundred eighty-four".