2004660 has 144 divisors (see below), whose sum is σ = 7303296. Its totient is φ = 435456.

The previous prime is 2004647. The next prime is 2004661. The reversal of 2004660 is 664002.

2004660 is a `hidden beast` number, since 2 + 0 + 0 + 4 + 660 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2004661) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46599 + ... + 46641.

2^2004660 is an apocalyptic number.

2004660 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 2004660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3651648).

2004660 is an abundant number, since it is smaller than the sum of its proper divisors (5298636).

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

2004660 is a wasteful number, since it uses less digits than its factorization.

2004660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2004660 is about 1415.8601625867. The cubic root of 2004660 is about 126.0898829561.

Adding to 2004660 its reverse (664002), we get a palindrome (2668662).

The spelling of 2004660 in words is "two million, four thousand, six hundred sixty".