789689 has 2 divisors, whose sum is σ = 789690. Its totient is φ = 789688.

The previous prime is 789683. The next prime is 789709. The reversal of 789689 is 986987.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 779689 + 10000 = 883^2 + 100^2 .

It is a cyclic number.

It is not a de Polignac number, because 789689 - 2⁴ = 789673 is a prime.

It is not a weakly prime, because it can be changed into another prime (789683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394844 + 394845.

It is an arithmetic number, because the mean of its divisors is an integer number (394845).

2⁷⁸⁹⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

789689 is a deficient number, since it is larger than the sum of its proper divisors (1).

789689 is an equidigital number, since it uses as much as digits as its factorization.

789689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 47.

The square root of 789689 is about 888.6444733413. The cubic root of 789689 is about 92.4312223091.

The spelling of 789689 in words is "seven hundred eighty-nine thousand, six hundred eighty-nine".