10806689 has 4 divisors (see below), whose sum is σ = 10823700. Its totient is φ = 10789680.

The previous prime is 10806661. The next prime is 10806721. The reversal of 10806689 is 98660801.

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 5085025 + 5721664 = 2255^2 + 2392^2 .

It is a cyclic number.

It is not a de Polignac number, because 10806689 - 2¹² = 10802593 is a prime.

It is a super-3 number, since 3×10806689³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10806659) 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 in 3 ways as a sum of consecutive naturals, for example, 7514 + ... + 8835.

It is an arithmetic number, because the mean of its divisors is an integer number (2705925).

Almost surely, 2^10806689 is an apocalyptic number.

It is an amenable number.

10806689 is a deficient number, since it is larger than the sum of its proper divisors (17011).

10806689 is an equidigital number, since it uses as much as digits as its factorization.

10806689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17010.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 10806689 is about 3287.3528864422. The cubic root of 10806689 is about 221.0875147351.

The spelling of 10806689 in words is "ten million, eight hundred six thousand, six hundred eighty-nine".