8641606560 has 96 divisors (see below), whose sum is σ = 27394682112. Its totient is φ = 2289730560.

The previous prime is 8641606507. The next prime is 8641606573. The reversal of 8641606560 is 656061468.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18025 + ... + 132695.

It is an arithmetic number, because the mean of its divisors is an integer number (285361272).

Almost surely, 2^8641606560 is an apocalyptic number.

8641606560 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8641606560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13697341056).

8641606560 is an abundant number, since it is smaller than the sum of its proper divisors (18753075552).

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

8641606560 is a wasteful number, since it uses less digits than its factorization.

8641606560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114846 (or 114838 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 8641606560 is about 92960.2418241261. The cubic root of 8641606560 is about 2052.0983123408.

The spelling of 8641606560 in words is "eight billion, six hundred forty-one million, six hundred six thousand, five hundred sixty".