10856689 has 4 divisors (see below), whose sum is σ = 10866240. Its totient is φ = 10847140.

The previous prime is 10856669. The next prime is 10856711. The reversal of 10856689 is 98665801.

10856689 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 10856689 - 2¹⁵ = 10823921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10856639) 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, 2797 + ... + 5434.

It is an arithmetic number, because the mean of its divisors is an integer number (2716560).

Almost surely, 2^10856689 is an apocalyptic number.

It is an amenable number.

10856689 is a deficient number, since it is larger than the sum of its proper divisors (9551).

10856689 is an equidigital number, since it uses as much as digits as its factorization.

10856689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9550.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 10856689 is about 3294.9490132626. The cubic root of 10856689 is about 221.4279634689.

The spelling of 10856689 in words is "ten million, eight hundred fifty-six thousand, six hundred eighty-nine".