2085321660 has 96 divisors (see below), whose sum is σ = 6191603712. Its totient is φ = 522593280.

The previous prime is 2085321629. The next prime is 2085321697. The reversal of 2085321660 is 661235802.

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, 1009789 + ... + 1011851.

It is an arithmetic number, because the mean of its divisors is an integer number (64495872).

Almost surely, 2^2085321660 is an apocalyptic number.

2085321660 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 2085321660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3095801856).

2085321660 is an abundant number, since it is smaller than the sum of its proper divisors (4106282052).

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

2085321660 is a wasteful number, since it uses less digits than its factorization.

2085321660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3083 (or 3081 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 2085321660 is about 45665.3222916471. The cubic root of 2085321660 is about 1277.5885710577.

The spelling of 2085321660 in words is "two billion, eighty-five million, three hundred twenty-one thousand, six hundred sixty".