8665812648 has 64 divisors (see below), whose sum is σ = 24123528000. Its totient is φ = 2882385216.

The previous prime is 8665812641. The next prime is 8665812653. The reversal of 8665812648 is 8462185668.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 8665812594 and 8665812603.

It is not an unprimeable number, because it can be changed into a prime (8665812641) 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 15 ways as a sum of consecutive naturals, for example, 57918 + ... + 143826.

It is an arithmetic number, because the mean of its divisors is an integer number (376930125).

Almost surely, 2^8665812648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8665812648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12061764000).

8665812648 is an abundant number, since it is smaller than the sum of its proper divisors (15457715352).

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

8665812648 is a wasteful number, since it uses less digits than its factorization.

8665812648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86391 (or 86381 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 54.

The square root of 8665812648 is about 93090.3466960995. The cubic root of 8665812648 is about 2054.0125769293.

The spelling of 8665812648 in words is "eight billion, six hundred sixty-five million, eight hundred twelve thousand, six hundred forty-eight".