689043563 has 16 divisors (see below), whose sum is σ = 764675520. Its totient is φ = 616761216.

The previous prime is 689043559. The next prime is 689043571. The reversal of 689043563 is 365340986.

689043563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 689043563 - 2² = 689043559 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689043533) 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, 150218 + ... + 154736.

It is an arithmetic number, because the mean of its divisors is an integer number (47792220).

Almost surely, 2^689043563 is an apocalyptic number.

689043563 is a deficient number, since it is larger than the sum of its proper divisors (75631957).

689043563 is a wasteful number, since it uses less digits than its factorization.

689043563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4886.

The product of its (nonzero) digits is 466560, while the sum is 44.

The square root of 689043563 is about 26249.6392927598. The cubic root of 689043563 is about 883.2471131541.

The spelling of 689043563 in words is "six hundred eighty-nine million, forty-three thousand, five hundred sixty-three".