11689745 has 4 divisors (see below), whose sum is σ = 14027700. Its totient is φ = 9351792.

The previous prime is 11689739. The next prime is 11689747. The reversal of 11689745 is 54798611.

11689745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7054336 + 4635409 = 2656^2 + 2153^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11689745 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11689747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1168970 + ... + 1168979.

It is an arithmetic number, because the mean of its divisors is an integer number (3506925).

Almost surely, 2^11689745 is an apocalyptic number.

It is an amenable number.

11689745 is a deficient number, since it is larger than the sum of its proper divisors (2337955).

11689745 is an equidigital number, since it uses as much as digits as its factorization.

11689745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337954.

The product of its digits is 60480, while the sum is 41.

The square root of 11689745 is about 3419.0269083469. The cubic root of 11689745 is about 226.9525216545.

The spelling of 11689745 in words is "eleven million, six hundred eighty-nine thousand, seven hundred forty-five".