40633566 has 16 divisors (see below), whose sum is σ = 81388800. Its totient is φ = 13524248.

The previous prime is 40633559. The next prime is 40633577. The reversal of 40633566 is 66533604.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396 + ... + 9023.

It is an arithmetic number, because the mean of its divisors is an integer number (5086800).

Almost surely, 2^40633566 is an apocalyptic number.

40633566 is an abundant number, since it is smaller than the sum of its proper divisors (40755234).

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

40633566 is a wasteful number, since it uses less digits than its factorization.

40633566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10143.

The product of its (nonzero) digits is 38880, while the sum is 33.

The square root of 40633566 is about 6374.4463288979. The cubic root of 40633566 is about 343.7913767934.

The spelling of 40633566 in words is "forty million, six hundred thirty-three thousand, five hundred sixty-six".