689734173 has 8 divisors (see below), whose sum is σ = 951357600. Its totient is φ = 443966768.

The previous prime is 689734169. The next prime is 689734207. The reversal of 689734173 is 371437986.

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 689734173 - 2² = 689734169 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689734273) 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, 3963903 + ... + 3964076.

It is an arithmetic number, because the mean of its divisors is an integer number (118919700).

Almost surely, 2^689734173 is an apocalyptic number.

It is an amenable number.

689734173 is a deficient number, since it is larger than the sum of its proper divisors (261623427).

689734173 is a wasteful number, since it uses less digits than its factorization.

689734173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7928011.

The product of its digits is 762048, while the sum is 48.

The square root of 689734173 is about 26262.7906552217. The cubic root of 689734173 is about 883.5420996379.

The spelling of 689734173 in words is "six hundred eighty-nine million, seven hundred thirty-four thousand, one hundred seventy-three".