1205535660 has 48 divisors (see below), whose sum is σ = 3857715456. Its totient is φ = 275550912.

The previous prime is 1205535631. The next prime is 1205535679. The reversal of 1205535660 is 665355021.

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, 1434742 + ... + 1435581.

It is an arithmetic number, because the mean of its divisors is an integer number (80369072).

Almost surely, 2^1205535660 is an apocalyptic number.

1205535660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1205535660 is an abundant number, since it is smaller than the sum of its proper divisors (2652179796).

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

1205535660 is a wasteful number, since it uses less digits than its factorization.

1205535660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2870342 (or 2870340 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 33.

The square root of 1205535660 is about 34720.8245869824. The cubic root of 1205535660 is about 1064.2900953488.

The spelling of 1205535660 in words is "one billion, two hundred five million, five hundred thirty-five thousand, six hundred sixty".