40564 has 6 divisors (see below), whose sum is σ = 70994. Its totient is φ = 20280.

The previous prime is 40559. The next prime is 40577. The reversal of 40564 is 46504.

It can be written as a sum of positive squares in only one way, i.e., 28900 + 11664 = 170^2 + 108^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5067 + ... + 5074.

2⁴⁰⁵⁶⁴ is an apocalyptic number.

It is an amenable number.

40564 is a deficient number, since it is larger than the sum of its proper divisors (30430).

40564 is a wasteful number, since it uses less digits than its factorization.

40564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10145 (or 10143 counting only the distinct ones).

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

The square root of 40564 is about 201.4050644845. The cubic root of 40564 is about 34.3595070679.

The spelling of 40564 in words is "forty thousand, five hundred sixty-four".