804689 has 2 divisors, whose sum is σ = 804690. Its totient is φ = 804688.

The previous prime is 804653. The next prime is 804697. The reversal of 804689 is 986408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 795664 + 9025 = 892^2 + 95^2 .

It is a cyclic number.

It is not a de Polignac number, because 804689 - 2¹² = 800593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (804619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402344 + 402345.

It is an arithmetic number, because the mean of its divisors is an integer number (402345).

2⁸⁰⁴⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

804689 is a deficient number, since it is larger than the sum of its proper divisors (1).

804689 is an equidigital number, since it uses as much as digits as its factorization.

804689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 804689 is about 897.0445919797. The cubic root of 804689 is about 93.0127935535.

The spelling of 804689 in words is "eight hundred four thousand, six hundred eighty-nine".