40566653 has 12 divisors (see below), whose sum is σ = 43269408. Its totient is φ = 38023560.

The previous prime is 40566637. The next prime is 40566683. The reversal of 40566653 is 35666504.

It is not a de Polignac number, because 40566653 - 2⁴ = 40566637 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40566683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36638 + ... + 37728.

It is an arithmetic number, because the mean of its divisors is an integer number (3605784).

Almost surely, 2^40566653 is an apocalyptic number.

It is an amenable number.

40566653 is a deficient number, since it is larger than the sum of its proper divisors (2702755).

40566653 is a wasteful number, since it uses less digits than its factorization.

40566653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232 (or 1213 counting only the distinct ones).

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

The square root of 40566653 is about 6369.1956321030. The cubic root of 40566653 is about 343.6025612114.

The spelling of 40566653 in words is "forty million, five hundred sixty-six thousand, six hundred fifty-three".