8563842 has 24 divisors (see below), whose sum is σ = 21206016. Its totient is φ = 2446776.

The previous prime is 8563831. The next prime is 8563853. The reversal of 8563842 is 2483658.

It is an interprime number because it is at equal distance from previous prime (8563831) and next prime (8563853).

It is a junction number, because it is equal to n+sod(n) for n = 8563797 and 8563806.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33858 + ... + 34109.

It is an arithmetic number, because the mean of its divisors is an integer number (883584).

Almost surely, 2^8563842 is an apocalyptic number.

8563842 is an abundant number, since it is smaller than the sum of its proper divisors (12642174).

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

8563842 is a wasteful number, since it uses less digits than its factorization.

8563842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67982 (or 67979 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 8563842 is about 2926.4042782910. The cubic root of 8563842 is about 204.5924243919.

The spelling of 8563842 in words is "eight million, five hundred sixty-three thousand, eight hundred forty-two".