9876765656 has 32 divisors (see below), whose sum is σ = 18636579840. Its totient is φ = 4907111328.

The previous prime is 9876765653. The next prime is 9876765709. The reversal of 9876765656 is 6565676789.

9876765656 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a super-2 number, since 2×9876765656² (a number of 21 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 9876765592 and 9876765601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9876765653) 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 7 ways as a sum of consecutive naturals, for example, 824945 + ... + 836831.

It is an arithmetic number, because the mean of its divisors is an integer number (582393120).

Almost surely, 2^9876765656 is an apocalyptic number.

It is an amenable number.

9876765656 is a deficient number, since it is larger than the sum of its proper divisors (8759814184).

9876765656 is a wasteful number, since it uses less digits than its factorization.

9876765656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12543 (or 12539 counting only the distinct ones).

The product of its digits is 114307200, while the sum is 65.

The square root of 9876765656 is about 99381.9181541592. The cubic root of 9876765656 is about 2145.5480733722.

The spelling of 9876765656 in words is "nine billion, eight hundred seventy-six million, seven hundred sixty-five thousand, six hundred fifty-six".