2205660 has 24 divisors (see below), whose sum is σ = 6176016. Its totient is φ = 588160.

The previous prime is 2205659. The next prime is 2205661. The reversal of 2205660 is 665022.

It is an interprime number because it is at equal distance from previous prime (2205659) and next prime (2205661).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18321 + ... + 18440.

It is an arithmetic number, because the mean of its divisors is an integer number (257334).

2^2205660 is an apocalyptic number.

2205660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2205660 is an abundant number, since it is smaller than the sum of its proper divisors (3970356).

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

2205660 is a wasteful number, since it uses less digits than its factorization.

2205660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36773 (or 36771 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2205660 is about 1485.1464574243. The cubic root of 2205660 is about 130.1705847409.

The spelling of 2205660 in words is "two million, two hundred five thousand, six hundred sixty".