806863 has 4 divisors (see below), whose sum is σ = 841968. Its totient is φ = 771760.

The previous prime is 806857. The next prime is 806893. The reversal of 806863 is 368608.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-806863 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17518 + ... + 17563.

It is an arithmetic number, because the mean of its divisors is an integer number (210492).

2⁸⁰⁶⁸⁶³ is an apocalyptic number.

806863 is a deficient number, since it is larger than the sum of its proper divisors (35105).

806863 is a wasteful number, since it uses less digits than its factorization.

806863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35104.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 806863 is about 898.2555315722. The cubic root of 806863 is about 93.0964813654.

The spelling of 806863 in words is "eight hundred six thousand, eight hundred sixty-three".