806881 has 4 divisors (see below), whose sum is σ = 818992. Its totient is φ = 794772.

The previous prime is 806857. The next prime is 806893. The reversal of 806881 is 188608.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 806881 - 2⁹ = 806369 is a prime.

It is a super-2 number, since 2×806881² = 1302113896322, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (806801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5955 + ... + 6088.

It is an arithmetic number, because the mean of its divisors is an integer number (204748).

2⁸⁰⁶⁸⁸¹ is an apocalyptic number.

It is an amenable number.

806881 is a deficient number, since it is larger than the sum of its proper divisors (12111).

806881 is a wasteful number, since it uses less digits than its factorization.

806881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12110.

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 806881 is about 898.2655509369. The cubic root of 806881 is about 93.0971736449.

The spelling of 806881 in words is "eight hundred six thousand, eight hundred eighty-one".