11689571 has 2 divisors, whose sum is σ = 11689572. Its totient is φ = 11689570.

The previous prime is 11689553. The next prime is 11689583. The reversal of 11689571 is 17598611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11689571 - 2¹⁴ = 11673187 is a prime.

It is not a weakly prime, because it can be changed into another prime (11689501) 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, 5844785 + 5844786.

It is an arithmetic number, because the mean of its divisors is an integer number (5844786).

Almost surely, 2^11689571 is an apocalyptic number.

11689571 is a deficient number, since it is larger than the sum of its proper divisors (1).

11689571 is an equidigital number, since it uses as much as digits as its factorization.

11689571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 38.

The square root of 11689571 is about 3419.0014624156. The cubic root of 11689571 is about 226.9513955981.

The spelling of 11689571 in words is "eleven million, six hundred eighty-nine thousand, five hundred seventy-one".