689716 has 12 divisors (see below), whose sum is σ = 1213380. Its totient is φ = 343040.

The previous prime is 689713. The next prime is 689723. The reversal of 689716 is 617986.

It can be written as a sum of positive squares in 2 ways, for example, as 324900 + 364816 = 570^2 + 604^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689713) 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, 756 + ... + 1396.

It is an arithmetic number, because the mean of its divisors is an integer number (101115).

2⁶⁸⁹⁷¹⁶ is an apocalyptic number.

It is an amenable number.

689716 is a deficient number, since it is larger than the sum of its proper divisors (523664).

689716 is a wasteful number, since it uses less digits than its factorization.

689716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914 (or 912 counting only the distinct ones).

The product of its digits is 18144, while the sum is 37.

The square root of 689716 is about 830.4914207865. The cubic root of 689716 is about 88.3534339764.

The spelling of 689716 in words is "six hundred eighty-nine thousand, seven hundred sixteen".