689232643 has 8 divisors (see below), whose sum is σ = 760339440. Its totient is φ = 619534080.

The previous prime is 689232613. The next prime is 689232653. The reversal of 689232643 is 346232986.

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

It is not a de Polignac number, because 689232643 - 2⁵ = 689232611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 689232643.

It is not an unprimeable number, because it can be changed into a prime (689232613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351030 + ... + 352987.

It is an arithmetic number, because the mean of its divisors is an integer number (95042430).

Almost surely, 2^689232643 is an apocalyptic number.

689232643 is a deficient number, since it is larger than the sum of its proper divisors (71106797).

689232643 is a wasteful number, since it uses less digits than its factorization.

689232643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704117.

The product of its digits is 373248, while the sum is 43.

The square root of 689232643 is about 26253.2406190169. The cubic root of 689232643 is about 883.3278961890.

It can be divided in two parts, 689 and 232643, that added together give a palindrome (233332).

The spelling of 689232643 in words is "six hundred eighty-nine million, two hundred thirty-two thousand, six hundred forty-three".