10905689 has 4 divisors (see below), whose sum is σ = 11055156. Its totient is φ = 10756224.

The previous prime is 10905683. The next prime is 10905701. The reversal of 10905689 is 98650901.

10905689 is digitally balanced in base 3, 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 8456464 + 2449225 = 2908^2 + 1565^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10905689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10905683) 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, 74624 + ... + 74769.

It is an arithmetic number, because the mean of its divisors is an integer number (2763789).

Almost surely, 2^10905689 is an apocalyptic number.

It is an amenable number.

10905689 is a deficient number, since it is larger than the sum of its proper divisors (149467).

10905689 is an equidigital number, since it uses as much as digits as its factorization.

10905689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149466.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 10905689 is about 3302.3762656608. The cubic root of 10905689 is about 221.7605905953.

The spelling of 10905689 in words is "ten million, nine hundred five thousand, six hundred eighty-nine".