2003985660 has 24 divisors (see below), whose sum is σ = 5611160016. Its totient is φ = 534396160.

The previous prime is 2003985649. The next prime is 2003985667. The reversal of 2003985660 is 665893002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003985667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16699821 + ... + 16699940.

It is an arithmetic number, because the mean of its divisors is an integer number (233798334).

Almost surely, 2^2003985660 is an apocalyptic number.

2003985660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2003985660 is an abundant number, since it is smaller than the sum of its proper divisors (3607174356).

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

2003985660 is a wasteful number, since it uses less digits than its factorization.

2003985660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33399773 (or 33399771 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 2003985660 is about 44765.8984049243. The cubic root of 2003985660 is about 1260.7574307077.

The spelling of 2003985660 in words is "two billion, three million, nine hundred eighty-five thousand, six hundred sixty".