8563940 has 96 divisors (see below), whose sum is σ = 23030784. Its totient is φ = 2597760.

The previous prime is 8563939. The next prime is 8563969. The reversal of 8563940 is 493658.

8563940 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 8563940.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103139 + ... + 103221.

It is an arithmetic number, because the mean of its divisors is an integer number (239904).

Almost surely, 2^8563940 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 8563940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11515392).

8563940 is an abundant number, since it is smaller than the sum of its proper divisors (14466844).

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

8563940 is a wasteful number, since it uses less digits than its factorization.

8563940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 8563940 is about 2926.4210223411. The cubic root of 8563940 is about 204.5932048042.

The spelling of 8563940 in words is "eight million, five hundred sixty-three thousand, nine hundred forty".