11987686 has 8 divisors (see below), whose sum is σ = 19039320. Its totient is φ = 5641248.

The previous prime is 11987681. The next prime is 11987687. The reversal of 11987686 is 68678911.

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 (11987681) 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, 176256 + ... + 176323.

It is an arithmetic number, because the mean of its divisors is an integer number (2379915).

Almost surely, 2^11987686 is an apocalyptic number.

11987686 is a deficient number, since it is larger than the sum of its proper divisors (7051634).

11987686 is a wasteful number, since it uses less digits than its factorization.

11987686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352598.

The product of its digits is 145152, while the sum is 46.

The square root of 11987686 is about 3462.3237861298. The cubic root of 11987686 is about 228.8645105354.

The spelling of 11987686 in words is "eleven million, nine hundred eighty-seven thousand, six hundred eighty-six".