40536666 has 16 divisors (see below), whose sum is σ = 90081600. Its totient is φ = 13512204.

The previous prime is 40536631. The next prime is 40536667. The reversal of 40536666 is 66663504.

It is a self number, because there is not a number n which added to its sum of digits gives 40536666.

It is not an unprimeable number, because it can be changed into a prime (40536667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375286 + ... + 375393.

It is an arithmetic number, because the mean of its divisors is an integer number (5630100).

Almost surely, 2^40536666 is an apocalyptic number.

40536666 is an abundant number, since it is smaller than the sum of its proper divisors (49544934).

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

40536666 is a wasteful number, since it uses less digits than its factorization.

40536666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750690 (or 750684 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 40536666 is about 6366.8411319900. The cubic root of 40536666 is about 343.5178763031.

The spelling of 40536666 in words is "forty million, five hundred thirty-six thousand, six hundred sixty-six".