806881705795687 has 16 divisors (see below), whose sum is σ = 878639305932000. Its totient is φ = 738053254237824.

The previous prime is 806881705795673. The next prime is 806881705795699. The reversal of 806881705795687 is 786597507188608.

It is a cyclic number.

It is not a de Polignac number, because 806881705795687 - 2³¹ = 806879558312039 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 (806881705795657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243800889 + ... + 247088317.

It is an arithmetic number, because the mean of its divisors is an integer number (54914956620750).

Almost surely, 2^{806881705795687} is an apocalyptic number.

806881705795687 is a deficient number, since it is larger than the sum of its proper divisors (71757600136313).

806881705795687 is a wasteful number, since it uses less digits than its factorization.

806881705795687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3732930.

The product of its (nonzero) digits is 11379916800, while the sum is 85.

The spelling of 806881705795687 in words is "eight hundred six trillion, eight hundred eighty-one billion, seven hundred five million, seven hundred ninety-five thousand, six hundred eighty-seven".