40566747 has 16 divisors (see below), whose sum is σ = 58553600. Its totient is φ = 24833952.

The previous prime is 40566727. The next prime is 40566749. The reversal of 40566747 is 74766504.

It is not a de Polignac number, because 40566747 - 2⁶ = 40566683 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40566749) 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 15 ways as a sum of consecutive naturals, for example, 5148 + ... + 10374.

It is an arithmetic number, because the mean of its divisors is an integer number (3659600).

Almost surely, 2^40566747 is an apocalyptic number.

40566747 is a deficient number, since it is larger than the sum of its proper divisors (17986853).

40566747 is a wasteful number, since it uses less digits than its factorization.

40566747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5442.

The product of its (nonzero) digits is 141120, while the sum is 39.

The square root of 40566747 is about 6369.2030113665. The cubic root of 40566747 is about 343.6028266069.

The spelling of 40566747 in words is "forty million, five hundred sixty-six thousand, seven hundred forty-seven".