205060660 has 96 divisors (see below), whose sum is σ = 522160128. Its totient is φ = 66147840.

The previous prime is 205060651. The next prime is 205060699. The reversal of 205060660 is 66060502.

205060660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159942 + ... + 161218.

It is an arithmetic number, because the mean of its divisors is an integer number (5439168).

Almost surely, 2^205060660 is an apocalyptic number.

205060660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 205060660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261080064).

205060660 is an abundant number, since it is smaller than the sum of its proper divisors (317099468).

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

205060660 is a wasteful number, since it uses less digits than its factorization.

205060660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1361 (or 1359 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 205060660 is about 14319.9392456812. The cubic root of 205060660 is about 589.6950065893.

The spelling of 205060660 in words is "two hundred five million, sixty thousand, six hundred sixty".