806680085 has 4 divisors (see below), whose sum is σ = 968016108. Its totient is φ = 645344064.

The previous prime is 806680079. The next prime is 806680097. The reversal of 806680085 is 580086608.

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 455267569 + 351412516 = 21337^2 + 18746^2 .

It is a cyclic number.

It is not a de Polignac number, because 806680085 - 2¹⁴ = 806663701 is a prime.

It is a Duffinian number.

It is a Curzon 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, 80668004 + ... + 80668013.

It is an arithmetic number, because the mean of its divisors is an integer number (242004027).

Almost surely, 2^806680085 is an apocalyptic number.

It is an amenable number.

806680085 is a deficient number, since it is larger than the sum of its proper divisors (161336023).

806680085 is a wasteful number, since it uses less digits than its factorization.

806680085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161336022.

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 806680085 is about 28402.1140938487. The cubic root of 806680085 is about 930.8944587532.

The spelling of 806680085 in words is "eight hundred six million, six hundred eighty thousand, eighty-five".