2663643 has 8 divisors (see below), whose sum is σ = 3596800. Its totient is φ = 1753128.

The previous prime is 2663627. The next prime is 2663651. The reversal of 2663643 is 3463662.

2663643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2663643 - 2⁴ = 2663627 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2663643.

It is not an unprimeable number, because it can be changed into a prime (2663603) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5383 + ... + 5856.

It is an arithmetic number, because the mean of its divisors is an integer number (449600).

2^2663643 is an apocalyptic number.

2663643 is a deficient number, since it is larger than the sum of its proper divisors (933157).

2663643 is a wasteful number, since it uses less digits than its factorization.

2663643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11321.

The product of its digits is 15552, while the sum is 30.

The square root of 2663643 is about 1632.0670942091. The cubic root of 2663643 is about 138.6198227136.

The spelling of 2663643 in words is "two million, six hundred sixty-three thousand, six hundred forty-three".