8182805 has 4 divisors (see below), whose sum is σ = 9819372. Its totient is φ = 6546240.

The previous prime is 8182793. The next prime is 8182813. The reversal of 8182805 is 5082818.

8182805 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2617924 + 5564881 = 1618^2 + 2359^2 .

It is not a de Polignac number, because 8182805 - 2¹⁰ = 8181781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable 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 in 3 ways as a sum of consecutive naturals, for example, 818276 + ... + 818285.

It is an arithmetic number, because the mean of its divisors is an integer number (2454843).

Almost surely, 2^8182805 is an apocalyptic number.

It is an amenable number.

8182805 is a deficient number, since it is larger than the sum of its proper divisors (1636567).

8182805 is a wasteful number, since it uses less digits than its factorization.

8182805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636566.

The product of its (nonzero) digits is 5120, while the sum is 32.

The square root of 8182805 is about 2860.5602598093. The cubic root of 8182805 is about 201.5119167382.

The spelling of 8182805 in words is "eight million, one hundred eighty-two thousand, eight hundred five".