689359243 has 8 divisors (see below), whose sum is σ = 724098816. Its totient is φ = 655017000.

The previous prime is 689359213. The next prime is 689359267. The reversal of 689359243 is 342953986.

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

It is not a de Polignac number, because 689359243 - 2¹³ = 689351051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689359213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95773 + ... + 102718.

It is an arithmetic number, because the mean of its divisors is an integer number (90512352).

Almost surely, 2^689359243 is an apocalyptic number.

689359243 is a deficient number, since it is larger than the sum of its proper divisors (34739573).

689359243 is a wasteful number, since it uses less digits than its factorization.

689359243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198665.

The product of its digits is 1399680, while the sum is 49.

The square root of 689359243 is about 26255.6516392186. The cubic root of 689359243 is about 883.3819768474.

The spelling of 689359243 in words is "six hundred eighty-nine million, three hundred fifty-nine thousand, two hundred forty-three".