40000564 has 6 divisors (see below), whose sum is σ = 70000994. Its totient is φ = 20000280.

The previous prime is 40000561. The next prime is 40000573. The reversal of 40000564 is 46500004.

It can be written as a sum of positive squares in only one way, i.e., 26604964 + 13395600 = 5158^2 + 3660^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40000561) 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 as a sum of consecutive naturals, namely, 5000067 + ... + 5000074.

Almost surely, 2^40000564 is an apocalyptic number.

It is an amenable number.

40000564 is a deficient number, since it is larger than the sum of its proper divisors (30000430).

40000564 is a wasteful number, since it uses less digits than its factorization.

40000564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000145 (or 10000143 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 40000564 is about 6324.5999082946. The cubic root of 40000564 is about 341.9967967052.

Adding to 40000564 its reverse (46500004), we get a palindrome (86500568).

The spelling of 40000564 in words is "forty million, five hundred sixty-four", and thus it is an aban number.