40611 has 4 divisors (see below), whose sum is σ = 54152. Its totient is φ = 27072.

The previous prime is 40609. The next prime is 40627. The reversal of 40611 is 11604.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 40611 - 2¹ = 40609 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6766 + ... + 6771.

It is an arithmetic number, because the mean of its divisors is an integer number (13538).

2⁴⁰⁶¹¹ is an apocalyptic number.

40611 is a deficient number, since it is larger than the sum of its proper divisors (13541).

40611 is a wasteful number, since it uses less digits than its factorization.

40611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13540.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 40611 is about 201.5217109892. The cubic root of 40611 is about 34.3727723074.

The spelling of 40611 in words is "forty thousand, six hundred eleven".