11968637 has 2 divisors, whose sum is σ = 11968638. Its totient is φ = 11968636.

The previous prime is 11968603. The next prime is 11968639. The reversal of 11968637 is 73686911.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10666756 + 1301881 = 3266^2 + 1141^2 .

It is a cyclic number.

It is not a de Polignac number, because 11968637 - 2⁸ = 11968381 is a prime.

Together with 11968639, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 11968594 and 11968603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11968639) 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, 5984318 + 5984319.

It is an arithmetic number, because the mean of its divisors is an integer number (5984319).

Almost surely, 2^11968637 is an apocalyptic number.

It is an amenable number.

11968637 is a deficient number, since it is larger than the sum of its proper divisors (1).

11968637 is an equidigital number, since it uses as much as digits as its factorization.

11968637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 11968637 is about 3459.5717943121. The cubic root of 11968637 is about 228.7432207572.

The spelling of 11968637 in words is "eleven million, nine hundred sixty-eight thousand, six hundred thirty-seven".