800081 has 8 divisors (see below), whose sum is σ = 846720. Its totient is φ = 754768.

The previous prime is 800077. The next prime is 800083. The reversal of 800081 is 180008.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 800081 - 2² = 800077 is a prime.

It is a super-2 number, since 2×800081² = 1280259213122, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (800083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1070 + ... + 1656.

It is an arithmetic number, because the mean of its divisors is an integer number (105840).

2⁸⁰⁰⁰⁸¹ is an apocalyptic number.

It is an amenable number.

800081 is a deficient number, since it is larger than the sum of its proper divisors (46639).

800081 is a wasteful number, since it uses less digits than its factorization.

800081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 800081 is about 894.4724702304. The cubic root of 800081 is about 92.8349096390.

Adding to 800081 its reverse (180008), we get a palindrome (980089).

The spelling of 800081 in words is "eight hundred thousand, eighty-one".