2643443 has 8 divisors (see below), whose sum is σ = 2903040. Its totient is φ = 2387080.

The previous prime is 2643439. The next prime is 2643457. The reversal of 2643443 is 3443462.

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 2643443 - 2² = 2643439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2643343) 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, 1118 + ... + 2556.

It is an arithmetic number, because the mean of its divisors is an integer number (362880).

2^2643443 is an apocalyptic number.

2643443 is a deficient number, since it is larger than the sum of its proper divisors (259597).

2643443 is a wasteful number, since it uses less digits than its factorization.

2643443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617.

The product of its digits is 6912, while the sum is 26.

The square root of 2643443 is about 1625.8668457165. The cubic root of 2643443 is about 138.2685207909.

The spelling of 2643443 in words is "two million, six hundred forty-three thousand, four hundred forty-three".