689611171 has 8 divisors (see below), whose sum is σ = 730435104. Its totient is φ = 648816000.

The previous prime is 689611163. The next prime is 689611193. The reversal of 689611171 is 171116986.

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 689611171 - 2³ = 689611163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (689611141) 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, 60421 + ... + 70921.

It is an arithmetic number, because the mean of its divisors is an integer number (91304388).

Almost surely, 2^689611171 is an apocalyptic number.

689611171 is a deficient number, since it is larger than the sum of its proper divisors (40823933).

689611171 is a wasteful number, since it uses less digits than its factorization.

689611171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14381.

The product of its digits is 18144, while the sum is 40.

The square root of 689611171 is about 26260.4487966219. The cubic root of 689611171 is about 883.4895751000.

The spelling of 689611171 in words is "six hundred eighty-nine million, six hundred eleven thousand, one hundred seventy-one".