11686637 has 2 divisors, whose sum is σ = 11686638. Its totient is φ = 11686636.

The previous prime is 11686621. The next prime is 11686663. The reversal of 11686637 is 73668611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9853321 + 1833316 = 3139^2 + 1354^2 .

It is an emirp because it is prime and its reverse (73668611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11686637 - 2⁴ = 11686621 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11686637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11686687) 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 as a sum of consecutive naturals, namely, 5843318 + 5843319.

It is an arithmetic number, because the mean of its divisors is an integer number (5843319).

Almost surely, 2^11686637 is an apocalyptic number.

It is an amenable number.

11686637 is a deficient number, since it is larger than the sum of its proper divisors (1).

11686637 is an equidigital number, since it uses as much as digits as its factorization.

11686637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 11686637 is about 3418.5723628439. The cubic root of 11686637 is about 226.9324062753.

The spelling of 11686637 in words is "eleven million, six hundred eighty-six thousand, six hundred thirty-seven".