2685005 has 4 divisors (see below), whose sum is σ = 3222012. Its totient is φ = 2148000.

The previous prime is 2684999. The next prime is 2685017. The reversal of 2685005 is 5005862.

2685005 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, and also an emirpimes, since its reverse is a distinct semiprime: 5005862 = 2 ⋅2502931.

It can be written as a sum of positive squares in 2 ways, for example, as 1387684 + 1297321 = 1178^2 + 1139^2 .

It is not a de Polignac number, because 2685005 - 2⁴ = 2684989 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, 268496 + ... + 268505.

It is an arithmetic number, because the mean of its divisors is an integer number (805503).

2^2685005 is an apocalyptic number.

It is an amenable number.

2685005 is a deficient number, since it is larger than the sum of its proper divisors (537007).

2685005 is an equidigital number, since it uses as much as digits as its factorization.

2685005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537006.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 2685005 is about 1638.5984865122. The cubic root of 2685005 is about 138.9894062281.

The spelling of 2685005 in words is "two million, six hundred eighty-five thousand, five".