2205684 has 48 divisors (see below), whose sum is σ = 6162240. Its totient is φ = 678240.

The previous prime is 2205667. The next prime is 2205703. The reversal of 2205684 is 4865022.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 619 + ... + 2189.

It is an arithmetic number, because the mean of its divisors is an integer number (128380).

2^2205684 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2205684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3081120).

2205684 is an abundant number, since it is smaller than the sum of its proper divisors (3956556).

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

2205684 is a wasteful number, since it uses less digits than its factorization.

2205684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597 (or 1589 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 2205684 is about 1485.1545374135. The cubic root of 2205684 is about 130.1710568721.

The spelling of 2205684 in words is "two million, two hundred five thousand, six hundred eighty-four".