12686573 has 8 divisors (see below), whose sum is σ = 13465080. Its totient is φ = 11911680.

The previous prime is 12686561. The next prime is 12686579. The reversal of 12686573 is 37568621.

12686573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2427364 + 10259209 = 1558^2 + 3203^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12686573 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 (12686579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10673 + ... + 11801.

It is an arithmetic number, because the mean of its divisors is an integer number (1683135).

Almost surely, 2^12686573 is an apocalyptic number.

It is an amenable number.

12686573 is a deficient number, since it is larger than the sum of its proper divisors (778507).

12686573 is a wasteful number, since it uses less digits than its factorization.

12686573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1807.

The product of its digits is 60480, while the sum is 38.

The square root of 12686573 is about 3561.8215845267. The cubic root of 12686573 is about 233.2284042948.

The spelling of 12686573 in words is "twelve million, six hundred eighty-six thousand, five hundred seventy-three".