12683687 has 4 divisors (see below), whose sum is σ = 12844320. Its totient is φ = 12523056.

The previous prime is 12683651. The next prime is 12683689. The reversal of 12683687 is 78638621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78638621 = 113 ⋅695917.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12683687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12683689) 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, 80198 + ... + 80355.

It is an arithmetic number, because the mean of its divisors is an integer number (3211080).

Almost surely, 2^12683687 is an apocalyptic number.

12683687 is a deficient number, since it is larger than the sum of its proper divisors (160633).

12683687 is an equidigital number, since it uses as much as digits as its factorization.

12683687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160632.

The product of its digits is 96768, while the sum is 41.

The square root of 12683687 is about 3561.4164317024. The cubic root of 12683687 is about 233.2107176634.

The spelling of 12683687 in words is "twelve million, six hundred eighty-three thousand, six hundred eighty-seven".