689373 has 6 divisors (see below), whose sum is σ = 995774. Its totient is φ = 459576.

The previous prime is 689369. The next prime is 689383. The reversal of 689373 is 373986.

689373 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 675684 + 13689 = 822^2 + 117^2 .

It is not a de Polignac number, because 689373 - 2² = 689369 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 (689383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38290 + ... + 38307.

2⁶⁸⁹³⁷³ is an apocalyptic number.

It is an amenable number.

689373 is a deficient number, since it is larger than the sum of its proper divisors (306401).

689373 is a wasteful number, since it uses less digits than its factorization.

689373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76603 (or 76600 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 689373 is about 830.2848908658. The cubic root of 689373 is about 88.3387853128.

The spelling of 689373 in words is "six hundred eighty-nine thousand, three hundred seventy-three".