11156689 has 2 divisors, whose sum is σ = 11156690. Its totient is φ = 11156688.

The previous prime is 11156681. The next prime is 11156707. The reversal of 11156689 is 98665111.

11156689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11155600 + 1089 = 3340^2 + 33^2 .

It is an emirp because it is prime and its reverse (98665111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11156689 - 2³ = 11156681 is a prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (11156681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5578344 + 5578345.

It is an arithmetic number, because the mean of its divisors is an integer number (5578345).

Almost surely, 2^11156689 is an apocalyptic number.

It is an amenable number.

11156689 is a deficient number, since it is larger than the sum of its proper divisors (1).

11156689 is an equidigital number, since it uses as much as digits as its factorization.

11156689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 37.

The square root of 11156689 is about 3340.1630199737. The cubic root of 11156689 is about 223.4490138556.

The spelling of 11156689 in words is "eleven million, one hundred fifty-six thousand, six hundred eighty-nine".