12765685 has 8 divisors (see below), whose sum is σ = 15477336. Its totient is φ = 10106880.

The previous prime is 12765679. The next prime is 12765721. The reversal of 12765685 is 58656721.

It can be written as a sum of positive squares in 4 ways, for example, as 3663396 + 9102289 = 1914^2 + 3017^2 .

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

It is not a de Polignac number, because 12765685 - 2¹¹ = 12763637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 12676 + ... + 13645.

It is an arithmetic number, because the mean of its divisors is an integer number (1934667).

Almost surely, 2^12765685 is an apocalyptic number.

It is an amenable number.

12765685 is a deficient number, since it is larger than the sum of its proper divisors (2711651).

12765685 is an equidigital number, since it uses as much as digits as its factorization.

12765685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26423.

The product of its digits is 100800, while the sum is 40.

The square root of 12765685 is about 3572.9098785164. The cubic root of 12765685 is about 233.7121951691.

The spelling of 12765685 in words is "twelve million, seven hundred sixty-five thousand, six hundred eighty-five".