801817 has 2 divisors, whose sum is σ = 801818. Its totient is φ = 801816.

The previous prime is 801811. The next prime is 801833. The reversal of 801817 is 718108.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 755161 + 46656 = 869^2 + 216^2 .

It is a cyclic number.

It is not a de Polignac number, because 801817 - 2³ = 801809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 801791 and 801800.

It is not a weakly prime, because it can be changed into another prime (801811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400908 + 400909.

It is an arithmetic number, because the mean of its divisors is an integer number (400909).

2⁸⁰¹⁸¹⁷ is an apocalyptic number.

It is an amenable number.

801817 is a deficient number, since it is larger than the sum of its proper divisors (1).

801817 is an equidigital number, since it uses as much as digits as its factorization.

801817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 25.

The square root of 801817 is about 895.4423487863. The cubic root of 801817 is about 92.9020049213.

The spelling of 801817 in words is "eight hundred one thousand, eight hundred seventeen".