806686320887 has 4 divisors (see below), whose sum is σ = 813825138000. Its totient is φ = 799547503776.

The previous prime is 806686320863. The next prime is 806686320899. The reversal of 806686320887 is 788023686608.

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

It is a cyclic number.

It is not a de Polignac number, because 806686320887 - 2¹⁶ = 806686255351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806689320887) 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, 3569408387 + ... + 3569408612.

It is an arithmetic number, because the mean of its divisors is an integer number (203456284500).

Almost surely, 2^806686320887 is an apocalyptic number.

806686320887 is a deficient number, since it is larger than the sum of its proper divisors (7138817113).

806686320887 is a wasteful number, since it uses less digits than its factorization.

806686320887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7138817112.

The product of its (nonzero) digits is 37158912, while the sum is 62.

The spelling of 806686320887 in words is "eight hundred six billion, six hundred eighty-six million, three hundred twenty thousand, eight hundred eighty-seven".