2004670643 has 4 divisors (see below), whose sum is σ = 2008194360. Its totient is φ = 2001146928.

The previous prime is 2004670609. The next prime is 2004670663. The reversal of 2004670643 is 3460764002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2004670643 - 2¹⁰ = 2004669619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2004670663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1761005 + ... + 1762142.

It is an arithmetic number, because the mean of its divisors is an integer number (502048590).

Almost surely, 2^2004670643 is an apocalyptic number.

2004670643 is a deficient number, since it is larger than the sum of its proper divisors (3523717).

2004670643 is an equidigital number, since it uses as much as digits as its factorization.

2004670643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3523716.

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 2004670643 is about 44773.5484745179. The cubic root of 2004670643 is about 1260.9010609820.

The spelling of 2004670643 in words is "two billion, four million, six hundred seventy thousand, six hundred forty-three".