805886 has 4 divisors (see below), whose sum is σ = 1208832. Its totient is φ = 402942.

The previous prime is 805877. The next prime is 805891. The reversal of 805886 is 688508.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

805886 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 201470 + ... + 201473.

It is an arithmetic number, because the mean of its divisors is an integer number (302208).

2⁸⁰⁵⁸⁸⁶ is an apocalyptic number.

805886 is a deficient number, since it is larger than the sum of its proper divisors (402946).

805886 is a wasteful number, since it uses less digits than its factorization.

805886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402945.

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 805886 is about 897.7115349599. The cubic root of 805886 is about 93.0588905152.

The spelling of 805886 in words is "eight hundred five thousand, eight hundred eighty-six".