689058805 has 8 divisors (see below), whose sum is σ = 827093592. Its totient is φ = 551098368.

The previous prime is 689058791. The next prime is 689058823. The reversal of 689058805 is 508850986.

689058805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 61355889 + 627702916 = 7833^2 + 25054^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 689058805 - 2²⁵ = 655504373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4389 + ... + 37381.

It is an arithmetic number, because the mean of its divisors is an integer number (103386699).

Almost surely, 2^689058805 is an apocalyptic number.

It is an amenable number.

689058805 is a deficient number, since it is larger than the sum of its proper divisors (138034787).

689058805 is a wasteful number, since it uses less digits than its factorization.

689058805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37175.

The product of its (nonzero) digits is 691200, while the sum is 49.

The square root of 689058805 is about 26249.9296189533. The cubic root of 689058805 is about 883.2536257337.

The spelling of 689058805 in words is "six hundred eighty-nine million, fifty-eight thousand, eight hundred five".