86587636869 has 24 divisors (see below), whose sum is σ = 125443398912. Its totient is φ = 57553372800.

The previous prime is 86587636829. The next prime is 86587636897. The reversal of 86587636869 is 96863678568.

86587636869 is a `hidden beast` number, since 8 + 6 + 587 + 6 + 36 + 8 + 6 + 9 = 666.

It is not a de Polignac number, because 86587636869 - 2⁹ = 86587636357 is a prime.

It is a super-2 number, since 2×86587636869² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 86587636797 and 86587636806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86587636829) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9765132 + ... + 9773994.

It is an arithmetic number, because the mean of its divisors is an integer number (5226808288).

Almost surely, 2^86587636869 is an apocalyptic number.

It is an amenable number.

86587636869 is a deficient number, since it is larger than the sum of its proper divisors (38855762043).

86587636869 is a wasteful number, since it uses less digits than its factorization.

86587636869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11977 (or 11974 counting only the distinct ones).

The product of its digits is 627056640, while the sum is 72.

The spelling of 86587636869 in words is "eighty-six billion, five hundred eighty-seven million, six hundred thirty-six thousand, eight hundred sixty-nine".