11639686 has 8 divisors (see below), whose sum is σ = 17487144. Its totient is φ = 5810640.

The previous prime is 11639681. The next prime is 11639707. The reversal of 11639686 is 68693611.

11639686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11639681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2895 + ... + 5626.

It is an arithmetic number, because the mean of its divisors is an integer number (2185893).

Almost surely, 2^11639686 is an apocalyptic number.

11639686 is a deficient number, since it is larger than the sum of its proper divisors (5847458).

11639686 is an equidigital number, since it uses as much as digits as its factorization.

11639686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9206.

The product of its digits is 46656, while the sum is 40.

The square root of 11639686 is about 3411.6984040211. The cubic root of 11639686 is about 226.6280984936.

The spelling of 11639686 in words is "eleven million, six hundred thirty-nine thousand, six hundred eighty-six".