8660663928 has 96 divisors (see below), whose sum is σ = 26822072160. Its totient is φ = 2473067520.

The previous prime is 8660663899. The next prime is 8660663929. The reversal of 8660663928 is 8293660668.

8660663928 is a `hidden beast` number, since 8 + 6 + 606 + 6 + 3 + 9 + 28 = 666.

It is a super-3 number, since 3×8660663928³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8660663929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1153948 + ... + 1161428.

It is an arithmetic number, because the mean of its divisors is an integer number (279396585).

Almost surely, 2^8660663928 is an apocalyptic number.

It is an amenable number.

8660663928 is an abundant number, since it is smaller than the sum of its proper divisors (18161408232).

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

8660663928 is a wasteful number, since it uses less digits than its factorization.

8660663928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9797 (or 9790 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 54.

The square root of 8660663928 is about 93062.6881623350. The cubic root of 8660663928 is about 2053.6057048828.

The spelling of 8660663928 in words is "eight billion, six hundred sixty million, six hundred sixty-three thousand, nine hundred twenty-eight".