41645 has 4 divisors (see below), whose sum is σ = 49980. Its totient is φ = 33312.

The previous prime is 41641. The next prime is 41647. The reversal of 41645 is 54614.

It is a happy number.

41645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9604 + 32041 = 98^2 + 179^2 .

It is a cyclic number.

It is not a de Polignac number, because 41645 - 2² = 41641 is a prime.

It is a super-3 number, since 3×41645³ = 216675523233375, which contains 333 as substring.

It is a plaindrome in base 14.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 41645.

It is not an unprimeable number, because it can be changed into a prime (41641) 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, 4160 + ... + 4169.

It is an arithmetic number, because the mean of its divisors is an integer number (12495).

2⁴¹⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

41645 is a deficient number, since it is larger than the sum of its proper divisors (8335).

41645 is an equidigital number, since it uses as much as digits as its factorization.

41645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8334.

The product of its digits is 480, while the sum is 20.

The square root of 41645 is about 204.0710660530. The cubic root of 41645 is about 34.6620535446.

It can be divided in two parts, 41 and 645, that added together give a palindrome (686).

The spelling of 41645 in words is "forty-one thousand, six hundred forty-five".