8564040 has 48 divisors (see below), whose sum is σ = 27834300. Its totient is φ = 2283648.

The previous prime is 8563987. The next prime is 8564053. The reversal of 8564040 is 404658.

8564040 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8054244 + 509796 = 2838^2 + 714^2 .

It is a super-2 number, since 2×8564040² = 146685562243200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8563995 and 8564013.

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, 11535 + ... + 12254.

Almost surely, 2^8564040 is an apocalyptic number.

It is an amenable number.

8564040 is an abundant number, since it is smaller than the sum of its proper divisors (19270260).

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

8564040 is a wasteful number, since it uses less digits than its factorization.

8564040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23806 (or 23799 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 8564040 is about 2926.4381080078. The cubic root of 8564040 is about 204.5940011370.

Adding to 8564040 its reverse (404658), we get a palindrome (8968698).

The spelling of 8564040 in words is "eight million, five hundred sixty-four thousand, forty".