2805606 has 24 divisors (see below), whose sum is σ = 6158880. Its totient is φ = 922896.

The previous prime is 2805601. The next prime is 2805619. The reversal of 2805606 is 6065082.

It is a self number, because there is not a number n which added to its sum of digits gives 2805606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2805601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 436 + ... + 2408.

It is an arithmetic number, because the mean of its divisors is an integer number (256620).

2^2805606 is an apocalyptic number.

2805606 is an abundant number, since it is smaller than the sum of its proper divisors (3353274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2805606 is a wasteful number, since it uses less digits than its factorization.

2805606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2060 (or 2057 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 2805606 is about 1674.9943283486. The cubic root of 2805606 is about 141.0399765929.

It can be divided in two parts, 280 and 5606, that added together give a triangular number (5886 = T₁₀₈).

The spelling of 2805606 in words is "two million, eight hundred five thousand, six hundred six".