8685642 has 48 divisors (see below), whose sum is σ = 20881152. Its totient is φ = 2399040.

The previous prime is 8685637. The next prime is 8685653. The reversal of 8685642 is 2465868.

It is a self number, because there is not a number n which added to its sum of digits gives 8685642.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8638 + ... + 9590.

It is an arithmetic number, because the mean of its divisors is an integer number (435024).

Almost surely, 2^8685642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8685642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10440576).

8685642 is an abundant number, since it is smaller than the sum of its proper divisors (12195510).

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

8685642 is a wasteful number, since it uses less digits than its factorization.

8685642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003 (or 996 counting only the distinct ones).

The product of its digits is 92160, while the sum is 39.

The square root of 8685642 is about 2947.1413267775. The cubic root of 8685642 is about 205.5578066252.

The spelling of 8685642 in words is "eight million, six hundred eighty-five thousand, six hundred forty-two".