2205740660 has 12 divisors (see below), whose sum is σ = 4632055428. Its totient is φ = 882296256.

The previous prime is 2205740657. The next prime is 2205740671. The reversal of 2205740660 is 660475022.

It can be written as a sum of positive squares in 2 ways, for example, as 312794596 + 1892946064 = 17686^2 + 43508^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55143497 + ... + 55143536.

It is an arithmetic number, because the mean of its divisors is an integer number (386004619).

Almost surely, 2^2205740660 is an apocalyptic number.

2205740660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2205740660 is an abundant number, since it is smaller than the sum of its proper divisors (2426314768).

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

2205740660 is a wasteful number, since it uses less digits than its factorization.

2205740660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110287042 (or 110287040 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 2205740660 is about 46965.3133706143. The cubic root of 2205740660 is about 1301.7217148163.

The spelling of 2205740660 in words is "two billion, two hundred five million, seven hundred forty thousand, six hundred sixty".