11145689 has 2 divisors, whose sum is σ = 11145690. Its totient is φ = 11145688.

The previous prime is 11145679. The next prime is 11145691. The reversal of 11145689 is 98654111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7382089 + 3763600 = 2717^2 + 1940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11145689 is a prime.

Together with 11145691, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (11145619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5572844 + 5572845.

It is an arithmetic number, because the mean of its divisors is an integer number (5572845).

Almost surely, 2^11145689 is an apocalyptic number.

It is an amenable number.

11145689 is a deficient number, since it is larger than the sum of its proper divisors (1).

11145689 is an equidigital number, since it uses as much as digits as its factorization.

11145689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 35.

The square root of 11145689 is about 3338.5159876808. The cubic root of 11145689 is about 223.3755527717.

The spelling of 11145689 in words is "eleven million, one hundred forty-five thousand, six hundred eighty-nine".