11689845 has 16 divisors (see below), whose sum is σ = 19688640. Its totient is φ = 5906304.

The previous prime is 11689837. The next prime is 11689849. The reversal of 11689845 is 54898611.

It is not a de Polignac number, because 11689845 - 2³ = 11689837 is a prime.

It is a super-2 number, since 2×11689845² = 273304952248050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11689797 and 11689806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11689849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20224 + ... + 20793.

It is an arithmetic number, because the mean of its divisors is an integer number (1230540).

Almost surely, 2^11689845 is an apocalyptic number.

11689845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11689845 is a deficient number, since it is larger than the sum of its proper divisors (7998795).

11689845 is a wasteful number, since it uses less digits than its factorization.

11689845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41044.

The product of its digits is 69120, while the sum is 42.

The square root of 11689845 is about 3419.0415323596. The cubic root of 11689845 is about 226.9531688082.

The spelling of 11689845 in words is "eleven million, six hundred eighty-nine thousand, eight hundred forty-five".