9678558769 has 48 divisors (see below), whose sum is σ = 11450138112. Its totient is φ = 8154432000.

The previous prime is 9678558719. The next prime is 9678558787.

9678558769 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 9678558769 - 2¹⁹ = 9678034481 is a prime.

It is a super-2 number, since 2×9678558769² (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 = 9678558698 and 9678558707.

It is not an unprimeable number, because it can be changed into a prime (9678558709) 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 47 ways as a sum of consecutive naturals, for example, 30921757 + ... + 30922069.

It is an arithmetic number, because the mean of its divisors is an integer number (238544544).

Almost surely, 2^9678558769 is an apocalyptic number.

It is an amenable number.

9678558769 is a deficient number, since it is larger than the sum of its proper divisors (1771579343).

9678558769 is a wasteful number, since it uses less digits than its factorization.

9678558769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 659 counting only the distinct ones).

The product of its digits is 228614400, while the sum is 70.

The square root of 9678558769 is about 98379.6664407844. Note that the first 3 decimals coincide. The cubic root of 9678558769 is about 2131.0986983815.

The spelling of 9678558769 in words is "nine billion, six hundred seventy-eight million, five hundred fifty-eight thousand, seven hundred sixty-nine".