40566387 has 8 divisors (see below), whose sum is σ = 56935360. Its totient is φ = 25620840.

The previous prime is 40566371. The next prime is 40566391. The reversal of 40566387 is 78366504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40566387 - 2⁴ = 40566371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40566397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355789 + ... + 355902.

It is an arithmetic number, because the mean of its divisors is an integer number (7116920).

Almost surely, 2^40566387 is an apocalyptic number.

40566387 is a deficient number, since it is larger than the sum of its proper divisors (16368973).

40566387 is a wasteful number, since it uses less digits than its factorization.

40566387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711713.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 40566387 is about 6369.1747503111. The cubic root of 40566387 is about 343.6018101965.

The spelling of 40566387 in words is "forty million, five hundred sixty-six thousand, three hundred eighty-seven".