2685605 has 16 divisors (see below), whose sum is σ = 3521280. Its totient is φ = 1954368.

The previous prime is 2685601. The next prime is 2685607. The reversal of 2685605 is 5065862.

It is a happy number.

It is not a de Polignac number, because 2685605 - 2² = 2685601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2685601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4874 + ... + 5396.

It is an arithmetic number, because the mean of its divisors is an integer number (220080).

2^2685605 is an apocalyptic number.

It is an amenable number.

2685605 is a deficient number, since it is larger than the sum of its proper divisors (835675).

2685605 is a wasteful number, since it uses less digits than its factorization.

2685605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620.

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 2685605 is about 1638.7815595741. The cubic root of 2685605 is about 138.9997584662. Note that the first 3 decimals are identical.

The spelling of 2685605 in words is "two million, six hundred eighty-five thousand, six hundred five".