689417231 has 4 divisors (see below), whose sum is σ = 689515512. Its totient is φ = 689318952.

The previous prime is 689417221. The next prime is 689417233. The reversal of 689417231 is 132714986.

689417231 is digitally balanced in base 2, 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 is a cyclic number.

It is not a de Polignac number, because 689417231 - 2¹⁰ = 689416207 is a prime.

It is a super-2 number, since 2×689417231² = 950592236799414722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689417233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37736 + ... + 52941.

It is an arithmetic number, because the mean of its divisors is an integer number (172378878).

Almost surely, 2^689417231 is an apocalyptic number.

689417231 is a deficient number, since it is larger than the sum of its proper divisors (98281).

689417231 is an equidigital number, since it uses as much as digits as its factorization.

689417231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98280.

The product of its digits is 72576, while the sum is 41.

The square root of 689417231 is about 26256.7559115745. The cubic root of 689417231 is about 883.4067457993.

The spelling of 689417231 in words is "six hundred eighty-nine million, four hundred seventeen thousand, two hundred thirty-one".