2684005 has 4 divisors (see below), whose sum is σ = 3220812. Its totient is φ = 2147200.

The previous prime is 2683999. The next prime is 2684021. The reversal of 2684005 is 5004862.

2684005 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 917764 + 1766241 = 958^2 + 1329^2 .

It is not a de Polignac number, because 2684005 - 2¹⁵ = 2651237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268396 + ... + 268405.

It is an arithmetic number, because the mean of its divisors is an integer number (805203).

2^2684005 is an apocalyptic number.

It is an amenable number.

2684005 is a deficient number, since it is larger than the sum of its proper divisors (536807).

2684005 is an equidigital number, since it uses as much as digits as its factorization.

2684005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536806.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 2684005 is about 1638.2933192808. The cubic root of 2684005 is about 138.9721490704.

Adding to 2684005 its reverse (5004862), we get a palindrome (7688867).

The spelling of 2684005 in words is "two million, six hundred eighty-four thousand, five".