2660443 has 4 divisors (see below), whose sum is σ = 2663728. Its totient is φ = 2657160.

The previous prime is 2660429. The next prime is 2660447. The reversal of 2660443 is 3440662.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2660443 - 2⁹ = 2659931 is a prime.

It is a Duffinian number.

2660443 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2660447) 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, 538 + ... + 2368.

It is an arithmetic number, because the mean of its divisors is an integer number (665932).

2^2660443 is an apocalyptic number.

2660443 is a deficient number, since it is larger than the sum of its proper divisors (3285).

2660443 is a wasteful number, since it uses less digits than its factorization.

2660443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3284.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 2660443 is about 1631.0864477397. The cubic root of 2660443 is about 138.5642895978.

The spelling of 2660443 in words is "two million, six hundred sixty thousand, four hundred forty-three".