12236689 has 2 divisors, whose sum is σ = 12236690. Its totient is φ = 12236688.

The previous prime is 12236687. The next prime is 12236701. The reversal of 12236689 is 98663221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11505664 + 731025 = 3392^2 + 855^2 .

It is an emirp because it is prime and its reverse (98663221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12236689 - 2¹ = 12236687 is a prime.

Together with 12236687, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 10.

It is a zygodrome in base 15.

It is not a weakly prime, because it can be changed into another prime (12236681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6118344 + 6118345.

It is an arithmetic number, because the mean of its divisors is an integer number (6118345).

Almost surely, 2^12236689 is an apocalyptic number.

It is an amenable number.

12236689 is a deficient number, since it is larger than the sum of its proper divisors (1).

12236689 is an equidigital number, since it uses as much as digits as its factorization.

12236689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 37.

The square root of 12236689 is about 3498.0979117229. The cubic root of 12236689 is about 230.4382883999.

The spelling of 12236689 in words is "twelve million, two hundred thirty-six thousand, six hundred eighty-nine".