689382271 has 4 divisors (see below), whose sum is σ = 690274872. Its totient is φ = 688489672.

The previous prime is 689382269. The next prime is 689382329. The reversal of 689382271 is 172283986.

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 689382271 - 2¹ = 689382269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689382571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 445141 + ... + 446686.

It is an arithmetic number, because the mean of its divisors is an integer number (172568718).

Almost surely, 2^689382271 is an apocalyptic number.

689382271 is a deficient number, since it is larger than the sum of its proper divisors (892601).

689382271 is an equidigital number, since it uses as much as digits as its factorization.

689382271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892600.

The product of its digits is 290304, while the sum is 46.

The square root of 689382271 is about 26256.0901697111. The cubic root of 689382271 is about 883.3918131767.

The spelling of 689382271 in words is "six hundred eighty-nine million, three hundred eighty-two thousand, two hundred seventy-one".