689317 has 2 divisors, whose sum is σ = 689318. Its totient is φ = 689316.

The previous prime is 689309. The next prime is 689321. The reversal of 689317 is 713986.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 564001 + 125316 = 751^2 + 354^2 .

It is a cyclic number.

It is not a de Polignac number, because 689317 - 2³ = 689309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (689357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344658 + 344659.

It is an arithmetic number, because the mean of its divisors is an integer number (344659).

2⁶⁸⁹³¹⁷ is an apocalyptic number.

It is an amenable number.

689317 is a deficient number, since it is larger than the sum of its proper divisors (1).

689317 is an equidigital number, since it uses as much as digits as its factorization.

689317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 34.

The square root of 689317 is about 830.2511668164. The cubic root of 689317 is about 88.3363932329.

The spelling of 689317 in words is "six hundred eighty-nine thousand, three hundred seventeen".