8646540 has 144 divisors (see below), whose sum is σ = 29992032. Its totient is φ = 1849344.

The previous prime is 8646529. The next prime is 8646559. The reversal of 8646540 is 456468.

It is a happy number.

8646540 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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 47 ways as a sum of consecutive naturals, for example, 49894 + ... + 50066.

It is an arithmetic number, because the mean of its divisors is an integer number (208278).

Almost surely, 2^8646540 is an apocalyptic number.

It is a pronic number, being equal to 2940×2941.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8646540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14996016).

8646540 is an abundant number, since it is smaller than the sum of its proper divisors (21345492).

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

8646540 is a wasteful number, since it uses less digits than its factorization.

8646540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 8646540 is about 2940.4999574902. The cubic root of 8646540 is about 205.2488748150.

The spelling of 8646540 in words is "eight million, six hundred forty-six thousand, five hundred forty".