12687336 has 24 divisors (see below), whose sum is σ = 34361730. Its totient is φ = 4229088.

The previous prime is 12687331. The next prime is 12687343. The reversal of 12687336 is 63378621.

It is a happy number.

12687336 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 12320100 + 367236 = 3510^2 + 606^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12687336.

It is not an unprimeable number, because it can be changed into a prime (12687331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 88035 + ... + 88178.

Almost surely, 2^12687336 is an apocalyptic number.

It is an amenable number.

12687336 is an abundant number, since it is smaller than the sum of its proper divisors (21674394).

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

12687336 is a wasteful number, since it uses less digits than its factorization.

12687336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176225 (or 176218 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 12687336 is about 3561.9286910324. The cubic root of 12687336 is about 233.2330798340.

The spelling of 12687336 in words is "twelve million, six hundred eighty-seven thousand, three hundred thirty-six".