2643243 has 8 divisors (see below), whose sum is σ = 3619728. Its totient is φ = 1714464.

The previous prime is 2643241. The next prime is 2643247. The reversal of 2643243 is 3423462.

It is a happy number.

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

It is not a de Polignac number, because 2643243 - 2¹ = 2643241 is a prime.

2643243 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2643241) 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, 11796 + ... + 12017.

It is an arithmetic number, because the mean of its divisors is an integer number (452466).

2^2643243 is an apocalyptic number.

2643243 is a deficient number, since it is larger than the sum of its proper divisors (976485).

2643243 is a wasteful number, since it uses less digits than its factorization.

2643243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23853.

The product of its digits is 3456, while the sum is 24.

The square root of 2643243 is about 1625.8053389013. The cubic root of 2643243 is about 138.2650336214.

The spelling of 2643243 in words is "two million, six hundred forty-three thousand, two hundred forty-three".