806185986 has 8 divisors (see below), whose sum is σ = 1612371984. Its totient is φ = 268728660.

The previous prime is 806185981. The next prime is 806185997. The reversal of 806185986 is 689581608.

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

806185986 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (806185981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67182160 + ... + 67182171.

It is an arithmetic number, because the mean of its divisors is an integer number (201546498).

Almost surely, 2^806185986 is an apocalyptic number.

806185986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

806185986 is a wasteful number, since it uses less digits than its factorization.

806185986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134364336.

The product of its (nonzero) digits is 829440, while the sum is 51.

The square root of 806185986 is about 28393.4144829395. The cubic root of 806185986 is about 930.7043594518.

The spelling of 806185986 in words is "eight hundred six million, one hundred eighty-five thousand, nine hundred eighty-six".