12687093 has 6 divisors (see below), whose sum is σ = 18325814. Its totient is φ = 8458056.

The previous prime is 12687089. The next prime is 12687109. The reversal of 12687093 is 39078621.

It can be written as a sum of positive squares in only one way, i.e., 9381969 + 3305124 = 3063^2 + 1818^2 .

It is not a de Polignac number, because 12687093 - 2² = 12687089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12607093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 704830 + ... + 704847.

Almost surely, 2^12687093 is an apocalyptic number.

It is an amenable number.

12687093 is a deficient number, since it is larger than the sum of its proper divisors (5638721).

12687093 is a wasteful number, since it uses less digits than its factorization.

12687093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409683 (or 1409680 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 12687093 is about 3561.8945801357. The cubic root of 12687093 is about 233.2315907901.

The spelling of 12687093 in words is "twelve million, six hundred eighty-seven thousand, ninety-three".