86779686693 has 16 divisors (see below), whose sum is σ = 132251412096. Its totient is φ = 49582505280.

The previous prime is 86779686659. The next prime is 86779686709. The reversal of 86779686693 is 39668697768.

It is not a de Polignac number, because 86779686693 - 2⁶ = 86779686629 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86779685693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60978 + ... + 421043.

It is an arithmetic number, because the mean of its divisors is an integer number (8265713256).

Almost surely, 2^86779686693 is an apocalyptic number.

It is an amenable number.

86779686693 is a deficient number, since it is larger than the sum of its proper divisors (45471725403).

86779686693 is a wasteful number, since it uses less digits than its factorization.

86779686693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490604.

The product of its digits is 987614208, while the sum is 75.

The spelling of 86779686693 in words is "eighty-six billion, seven hundred seventy-nine million, six hundred eighty-six thousand, six hundred ninety-three".