40559664 has 60 divisors (see below), whose sum is σ = 107507256. Its totient is φ = 13176576.

The previous prime is 40559639. The next prime is 40559669. The reversal of 40559664 is 46695504.

It is not an unprimeable number, because it can be changed into a prime (40559669) 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 11 ways as a sum of consecutive naturals, for example, 88524 + ... + 88980.

Almost surely, 2^40559664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40559664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53753628).

40559664 is an abundant number, since it is smaller than the sum of its proper divisors (66947592).

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

40559664 is a wasteful number, since it uses less digits than its factorization.

40559664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554 (or 505 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The square root of 40559664 is about 6368.6469520613. The cubic root of 40559664 is about 343.5828276286.

The spelling of 40559664 in words is "forty million, five hundred fifty-nine thousand, six hundred sixty-four".