12685641 has 8 divisors (see below), whose sum is σ = 17152704. Its totient is φ = 8337840.

The previous prime is 12685639. The next prime is 12685643. The reversal of 12685641 is 14658621.

It is an interprime number because it is at equal distance from previous prime (12685639) and next prime (12685643).

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

It is not a de Polignac number, because 12685641 - 2¹ = 12685639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12685643) 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, 29566 + ... + 29991.

It is an arithmetic number, because the mean of its divisors is an integer number (2144088).

Almost surely, 2^12685641 is an apocalyptic number.

It is an amenable number.

12685641 is a deficient number, since it is larger than the sum of its proper divisors (4467063).

12685641 is an equidigital number, since it uses as much as digits as its factorization.

12685641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59631.

The product of its digits is 11520, while the sum is 33.

The square root of 12685641 is about 3561.6907501915. The cubic root of 12685641 is about 233.2226928970. Note that the first 3 decimals are identical.

The spelling of 12685641 in words is "twelve million, six hundred eighty-five thousand, six hundred forty-one".