2104605 has 12 divisors (see below), whose sum is σ = 3648060. Its totient is φ = 1122432.

The previous prime is 2104601. The next prime is 2104607. The reversal of 2104605 is 5064012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 599076 + 1505529 = 774^2 + 1227^2 .

It is not a de Polignac number, because 2104605 - 2² = 2104601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2104601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23340 + ... + 23429.

It is an arithmetic number, because the mean of its divisors is an integer number (304005).

2^2104605 is an apocalyptic number.

It is an amenable number.

2104605 is a deficient number, since it is larger than the sum of its proper divisors (1543455).

2104605 is a wasteful number, since it uses less digits than its factorization.

2104605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46780 (or 46777 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2104605 is about 1450.7256804786. The cubic root of 2104605 is about 128.1514524007.

Adding to 2104605 its reverse (5064012), we get a palindrome (7168617).

The spelling of 2104605 in words is "two million, one hundred four thousand, six hundred five".