806181 has 8 divisors (see below), whose sum is σ = 1085760. Its totient is φ = 532032.

The previous prime is 806177. The next prime is 806203. The reversal of 806181 is 181608.

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

It is not a de Polignac number, because 806181 - 2² = 806177 is a prime.

It is a super-2 number, since 2×806181² = 1299855609522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

806181 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 806181.

It is not an unprimeable number, because it can be changed into a prime (806111) 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, 996 + ... + 1613.

It is an arithmetic number, because the mean of its divisors is an integer number (135720).

2⁸⁰⁶¹⁸¹ is an apocalyptic number.

It is an amenable number.

806181 is a deficient number, since it is larger than the sum of its proper divisors (279579).

806181 is a wasteful number, since it uses less digits than its factorization.

806181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2715.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 806181 is about 897.8758266041. The cubic root of 806181 is about 93.0702440746.

Adding to 806181 its reverse (181608), we get a palindrome (987789).

The spelling of 806181 in words is "eight hundred six thousand, one hundred eighty-one".