8564742 has 24 divisors (see below), whose sum is σ = 19156800. Its totient is φ = 2762640.

The previous prime is 8564741. The next prime is 8564749. The reversal of 8564742 is 2474658.

8564742 is a `hidden beast` number, since 8 + 5 + 647 + 4 + 2 = 666.

It is a d-powerful number, because it can be written as 8³ + 5⁵ + 6⁶ + 4⁶ + 7⁶ + 4⁶ + 2²³ .

It is a junction number, because it is equal to n+sod(n) for n = 8564697 and 8564706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8564741) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 7117 + ... + 8232.

It is an arithmetic number, because the mean of its divisors is an integer number (798200).

Almost surely, 2^8564742 is an apocalyptic number.

8564742 is an abundant number, since it is smaller than the sum of its proper divisors (10592058).

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

8564742 is a wasteful number, since it uses less digits than its factorization.

8564742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15388 (or 15385 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 8564742 is about 2926.5580465796. The cubic root of 8564742 is about 204.5995912193.

The spelling of 8564742 in words is "eight million, five hundred sixty-four thousand, seven hundred forty-two".