8961689776 has 20 divisors (see below), whose sum is σ = 18698910832. Its totient is φ = 4136164416.

The previous prime is 8961689741. The next prime is 8961689831. The reversal of 8961689776 is 6779861698.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21542316 + ... + 21542731.

Almost surely, 2^8961689776 is an apocalyptic number.

It is an amenable number.

8961689776 is an abundant number, since it is smaller than the sum of its proper divisors (9737221056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8961689776 is a wasteful number, since it uses less digits than its factorization.

8961689776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43085068 (or 43085062 counting only the distinct ones).

The product of its digits is 54867456, while the sum is 67.

The square root of 8961689776 is about 94666.2018674036. The cubic root of 8961689776 is about 2077.1282002701.

The spelling of 8961689776 in words is "eight billion, nine hundred sixty-one million, six hundred eighty-nine thousand, seven hundred seventy-six".