164789 has 2 divisors, whose sum is σ = 164790. Its totient is φ = 164788.

The previous prime is 164771. The next prime is 164809. The reversal of 164789 is 987461.

164789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136900 + 27889 = 370^2 + 167^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82394 + 82395.

It is an arithmetic number, because the mean of its divisors is an integer number (82395).

2¹⁶⁴⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

164789 is a deficient number, since it is larger than the sum of its proper divisors (1).

164789 is an equidigital number, since it uses as much as digits as its factorization.

164789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 35.

The square root of 164789 is about 405.9421141000. The cubic root of 164789 is about 54.8246758709.

The spelling of 164789 in words is "one hundred sixty-four thousand, seven hundred eighty-nine".