9686556869 has 6 divisors (see below), whose sum is σ = 10647207270. Its totient is φ = 8805960680.

The previous prime is 9686556751. The next prime is 9686556889.

9686556869 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 8420264644 + 1266292225 = 91762^2 + 35585^2 .

It is not a de Polignac number, because 9686556869 - 2⁸ = 9686556613 is a prime.

It is a super-2 number, since 2×9686556869² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9686556799 and 9686556808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9686556889) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 40026974 + ... + 40027215.

It is an arithmetic number, because the mean of its divisors is an integer number (1774534545).

Almost surely, 2^9686556869 is an apocalyptic number.

It is an amenable number.

9686556869 is a deficient number, since it is larger than the sum of its proper divisors (960650401).

9686556869 is a wasteful number, since it uses less digits than its factorization.

9686556869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80054211 (or 80054200 counting only the distinct ones).

The product of its digits is 167961600, while the sum is 68.

The square root of 9686556869 is about 98420.3071982607. The cubic root of 9686556869 is about 2131.6855642554.

The spelling of 9686556869 in words is "nine billion, six hundred eighty-six million, five hundred fifty-six thousand, eight hundred sixty-nine".