12687016 has 16 divisors (see below), whose sum is σ = 23829300. Its totient is φ = 6332544.

The previous prime is 12687011. The next prime is 12687019. The reversal of 12687016 is 61078621.

It can be written as a sum of positive squares in 2 ways, for example, as 11930116 + 756900 = 3454^2 + 870^2 .

It is not an unprimeable number, because it can be changed into a prime (12687011) 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, 5676 + ... + 7588.

Almost surely, 2^12687016 is an apocalyptic number.

It is an amenable number.

12687016 is a deficient number, since it is larger than the sum of its proper divisors (11142284).

12687016 is a wasteful number, since it uses less digits than its factorization.

12687016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2748 (or 2744 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 12687016 is about 3561.8837712649. The cubic root of 12687016 is about 233.2311189492.

The spelling of 12687016 in words is "twelve million, six hundred eighty-seven thousand, sixteen".