40166585 has 8 divisors (see below), whose sum is σ = 48256776. Its totient is φ = 32095360.

The previous prime is 40166573. The next prime is 40166587. The reversal of 40166585 is 58566104.

It is a happy number.

40166585 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 12845056 + 27321529 = 3584^2 + 5227^2 .

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

It is not a de Polignac number, because 40166585 - 2⁴ = 40166569 is a prime.

It is a super-2 number, since 2×40166585² = 3226709101124450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40166587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437 + ... + 8973.

It is an arithmetic number, because the mean of its divisors is an integer number (6032097).

Almost surely, 2^40166585 is an apocalyptic number.

It is an amenable number.

40166585 is a deficient number, since it is larger than the sum of its proper divisors (8090191).

40166585 is an equidigital number, since it uses as much as digits as its factorization.

40166585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9483.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 40166585 is about 6337.7113376991. The cubic root of 40166585 is about 342.4692923612.

It can be divided in two parts, 4016 and 6585, that added together give a palindrome (10601).

The spelling of 40166585 in words is "forty million, one hundred sixty-six thousand, five hundred eighty-five".