8666560 has 112 divisors (see below), whose sum is σ = 24359616. Its totient is φ = 2875392.

The previous prime is 8666543. The next prime is 8666591. The reversal of 8666560 is 656668.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

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, 118684 + ... + 118756.

Almost surely, 2^8666560 is an apocalyptic number.

8666560 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 8666560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12179808).

8666560 is an abundant number, since it is smaller than the sum of its proper divisors (15693056).

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

8666560 is a wasteful number, since it uses less digits than its factorization.

8666560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 8666560 is about 2943.9021722877. The cubic root of 8666560 is about 205.4071622220.

The spelling of 8666560 in words is "eight million, six hundred sixty-six thousand, five hundred sixty".