11712689 has 2 divisors, whose sum is σ = 11712690. Its totient is φ = 11712688.

The previous prime is 11712661. The next prime is 11712703. The reversal of 11712689 is 98621711.

11712689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11505664 + 207025 = 3392^2 + 455^2 .

It is a cyclic number.

It is not a de Polignac number, because 11712689 - 2²⁰ = 10664113 is a prime.

It is a super-2 number, since 2×11712689² = 274374167221442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11712289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5856344 + 5856345.

It is an arithmetic number, because the mean of its divisors is an integer number (5856345).

Almost surely, 2^11712689 is an apocalyptic number.

It is an amenable number.

11712689 is a deficient number, since it is larger than the sum of its proper divisors (1).

11712689 is an equidigital number, since it uses as much as digits as its factorization.

11712689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 35.

The square root of 11712689 is about 3422.3806041994. The cubic root of 11712689 is about 227.1009079984.

The spelling of 11712689 in words is "eleven million, seven hundred twelve thousand, six hundred eighty-nine".