40536656 has 20 divisors (see below), whose sum is σ = 79117332. Its totient is φ = 20119296.

The previous prime is 40536631. The next prime is 40536667. The reversal of 40536656 is 65663504.

It can be written as a sum of positive squares in 2 ways, for example, as 20106256 + 20430400 = 4484^2 + 4520^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7055 + ... + 11438.

Almost surely, 2^40536656 is an apocalyptic number.

It is an amenable number.

40536656 is a deficient number, since it is larger than the sum of its proper divisors (38580676).

40536656 is a wasteful number, since it uses less digits than its factorization.

40536656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18638 (or 18632 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 40536656 is about 6366.8403466712. The cubic root of 40536656 is about 343.5178480556.

The spelling of 40536656 in words is "forty million, five hundred thirty-six thousand, six hundred fifty-six".