8564140 has 24 divisors (see below), whose sum is σ = 19368720. Its totient is φ = 3162048.

The previous prime is 8564123. The next prime is 8564147. The reversal of 8564140 is 414658.

It is a junction number, because it is equal to n+sod(n) for n = 8564099 and 8564108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8564147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16210 + ... + 16729.

It is an arithmetic number, because the mean of its divisors is an integer number (807030).

Almost surely, 2^8564140 is an apocalyptic number.

It is an amenable number.

8564140 is an abundant number, since it is smaller than the sum of its proper divisors (10804580).

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

8564140 is a wasteful number, since it uses less digits than its factorization.

8564140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32961 (or 32959 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 8564140 is about 2926.4551935746. The cubic root of 8564140 is about 204.5947974637.

Adding to 8564140 its reverse (414658), we get a palindrome (8978798).

The spelling of 8564140 in words is "eight million, five hundred sixty-four thousand, one hundred forty".