40556564 has 24 divisors (see below), whose sum is σ = 75075840. Its totient is φ = 19116864.

The previous prime is 40556557. The next prime is 40556591. The reversal of 40556564 is 46565504.

It is a congruent number.

It is an unprimeable number.

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, 15752 + ... + 18144.

It is an arithmetic number, because the mean of its divisors is an integer number (3128160).

Almost surely, 2^40556564 is an apocalyptic number.

It is an amenable number.

40556564 is a deficient number, since it is larger than the sum of its proper divisors (34519276).

40556564 is a wasteful number, since it uses less digits than its factorization.

40556564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2639 (or 2637 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The square root of 40556564 is about 6368.4035676141. The cubic root of 40556564 is about 343.5740739901.

The spelling of 40556564 in words is "forty million, five hundred fifty-six thousand, five hundred sixty-four".