12686237 has 4 divisors (see below), whose sum is σ = 12724896. Its totient is φ = 12647580.

The previous prime is 12686213. The next prime is 12686251. The reversal of 12686237 is 73268621.

It is a happy number.

12686237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73268621 = 37 ⋅1980233.

It is a cyclic number.

It is not a de Polignac number, because 12686237 - 2⁶ = 12686173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12686197 and 12686206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12686207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18833 + ... + 19494.

It is an arithmetic number, because the mean of its divisors is an integer number (3181224).

Almost surely, 2^12686237 is an apocalyptic number.

It is an amenable number.

12686237 is a deficient number, since it is larger than the sum of its proper divisors (38659).

12686237 is an equidigital number, since it uses as much as digits as its factorization.

12686237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38658.

The product of its digits is 24192, while the sum is 35.

The square root of 12686237 is about 3561.7744173375. The cubic root of 12686237 is about 233.2263452824.

The spelling of 12686237 in words is "twelve million, six hundred eighty-six thousand, two hundred thirty-seven".