12680285 has 4 divisors (see below), whose sum is σ = 15216348. Its totient is φ = 10144224.

The previous prime is 12680281. The next prime is 12680287. The reversal of 12680285 is 58208621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58208621 = 2707 ⋅21503.

It can be written as a sum of positive squares in 2 ways, for example, as 7689529 + 4990756 = 2773^2 + 2234^2 .

It is a cyclic number.

It is not a de Polignac number, because 12680285 - 2² = 12680281 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 (12680281) 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 3 ways as a sum of consecutive naturals, for example, 1268024 + ... + 1268033.

It is an arithmetic number, because the mean of its divisors is an integer number (3804087).

Almost surely, 2^12680285 is an apocalyptic number.

It is an amenable number.

12680285 is a deficient number, since it is larger than the sum of its proper divisors (2536063).

12680285 is an equidigital number, since it uses as much as digits as its factorization.

12680285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2536062.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 12680285 is about 3560.9387807150. The cubic root of 12680285 is about 233.1898653197.

The spelling of 12680285 in words is "twelve million, six hundred eighty thousand, two hundred eighty-five".