2004656 has 20 divisors (see below), whose sum is σ = 3906000. Its totient is φ = 996672.

The previous prime is 2004647. The next prime is 2004661. The reversal of 2004656 is 6564002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5405 + ... + 5763.

It is an arithmetic number, because the mean of its divisors is an integer number (195300).

2^2004656 is an apocalyptic number.

It is an amenable number.

2004656 is a deficient number, since it is larger than the sum of its proper divisors (1901344).

2004656 is a wasteful number, since it uses less digits than its factorization.

2004656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716 (or 710 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 2004656 is about 1415.8587500171. The cubic root of 2004656 is about 126.0897990915.

Adding to 2004656 its reverse (6564002), we get a palindrome (8568658).

It can be divided in two parts, 20046 and 56, that added together give a palindrome (20102).

The spelling of 2004656 in words is "two million, four thousand, six hundred fifty-six".