2004643 has 8 divisors (see below), whose sum is σ = 2075760. Its totient is φ = 1934880.

The previous prime is 2004641. The next prime is 2004647. The reversal of 2004643 is 3464002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2004643 - 2¹ = 2004641 is a prime.

It is a Duffinian number.

2004643 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2004643.

It is not an unprimeable number, because it can be changed into a prime (2004641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3321 + ... + 3877.

It is an arithmetic number, because the mean of its divisors is an integer number (259470).

2^2004643 is an apocalyptic number.

2004643 is a deficient number, since it is larger than the sum of its proper divisors (71117).

2004643 is an equidigital number, since it uses as much as digits as its factorization.

2004643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 2004643 is about 1415.8541591562. The cubic root of 2004643 is about 126.0895265309.

Adding to 2004643 its reverse (3464002), we get a palindrome (5468645).

The spelling of 2004643 in words is "two million, four thousand, six hundred forty-three".