8689555672 has 32 divisors (see below), whose sum is σ = 19123737120. Its totient is φ = 3623443200.

The previous prime is 8689555669. The next prime is 8689555681. The reversal of 8689555672 is 2765559868.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 8689555672.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2094829 + ... + 2098972.

It is an arithmetic number, because the mean of its divisors is an integer number (597616785).

Almost surely, 2^8689555672 is an apocalyptic number.

It is an amenable number.

8689555672 is an abundant number, since it is smaller than the sum of its proper divisors (10434181448).

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

8689555672 is a wasteful number, since it uses less digits than its factorization.

8689555672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4193851 (or 4193847 counting only the distinct ones).

The product of its digits is 36288000, while the sum is 61.

The square root of 8689555672 is about 93217.7862427552. The cubic root of 8689555672 is about 2055.8867615417.

The spelling of 8689555672 in words is "eight billion, six hundred eighty-nine million, five hundred fifty-five thousand, six hundred seventy-two".