2004660805 has 24 divisors (see below), whose sum is σ = 2804571000. Its totient is φ = 1371565440.

The previous prime is 2004660799. The next prime is 2004660821. The reversal of 2004660805 is 5080664002.

It can be written as a sum of positive squares in 4 ways, for example, as 3261636 + 2001399169 = 1806^2 + 44737^2 .

It is not a de Polignac number, because 2004660805 - 2⁷ = 2004660677 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 104071 + ... + 121819.

It is an arithmetic number, because the mean of its divisors is an integer number (116857125).

Almost surely, 2^2004660805 is an apocalyptic number.

It is an amenable number.

2004660805 is a deficient number, since it is larger than the sum of its proper divisors (799910195).

2004660805 is a wasteful number, since it uses less digits than its factorization.

2004660805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18229 (or 18222 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 2004660805 is about 44773.4386104083. The cubic root of 2004660805 is about 1260.8989983382.

The spelling of 2004660805 in words is "two billion, four million, six hundred sixty thousand, eight hundred five".