985806 has 12 divisors (see below), whose sum is σ = 2135952. Its totient is φ = 328596.

The previous prime is 985799. The next prime is 985807. The reversal of 985806 is 608589.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985807) 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 5 ways as a sum of consecutive naturals, for example, 27366 + ... + 27401.

It is an arithmetic number, because the mean of its divisors is an integer number (177996).

2⁹⁸⁵⁸⁰⁶ is an apocalyptic number.

985806 is an abundant number, since it is smaller than the sum of its proper divisors (1150146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

985806 is a wasteful number, since it uses less digits than its factorization.

985806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54775 (or 54772 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 985806 is about 992.8776359653. The cubic root of 985806 is about 99.5246102941.

The spelling of 985806 in words is "nine hundred eighty-five thousand, eight hundred six".