689383 has 2 divisors, whose sum is σ = 689384. Its totient is φ = 689382.

The previous prime is 689369. The next prime is 689389. The reversal of 689383 is 383986.

It is a happy number.

689383 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 689383 - 2⁹ = 688871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (689389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344691 + 344692.

It is an arithmetic number, because the mean of its divisors is an integer number (344692).

2⁶⁸⁹³⁸³ is an apocalyptic number.

689383 is a deficient number, since it is larger than the sum of its proper divisors (1).

689383 is an equidigital number, since it uses as much as digits as its factorization.

689383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 37.

The square root of 689383 is about 830.2909128733. The cubic root of 689383 is about 88.3392124563.

The spelling of 689383 in words is "six hundred eighty-nine thousand, three hundred eighty-three".