2004001684 has 24 divisors (see below), whose sum is σ = 3874747968. Its totient is φ = 902056320.

The previous prime is 2004001639. The next prime is 2004001721. The reversal of 2004001684 is 4861004002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 639102 + ... + 642229.

It is an arithmetic number, because the mean of its divisors is an integer number (161447832).

Almost surely, 2^2004001684 is an apocalyptic number.

It is an amenable number.

2004001684 is a deficient number, since it is larger than the sum of its proper divisors (1870746284).

2004001684 is a wasteful number, since it uses less digits than its factorization.

2004001684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281375 (or 1281373 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 2004001684 is about 44766.0773800877. The cubic root of 2004001684 is about 1260.7607910649.

Adding to 2004001684 its reverse (4861004002), we get a palindrome (6865005686).

The spelling of 2004001684 in words is "two billion, four million, one thousand, six hundred eighty-four".