3243445 has 4 divisors (see below), whose sum is σ = 3892140. Its totient is φ = 2594752.

The previous prime is 3243397. The next prime is 3243467. The reversal of 3243445 is 5443423.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 550564 + 2692881 = 742^2 + 1641^2 .

It is a cyclic number.

It is not a de Polignac number, because 3243445 - 2¹¹ = 3241397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324340 + ... + 324349.

It is an arithmetic number, because the mean of its divisors is an integer number (973035).

Almost surely, 2^3243445 is an apocalyptic number.

It is an amenable number.

3243445 is a deficient number, since it is larger than the sum of its proper divisors (648695).

3243445 is an equidigital number, since it uses as much as digits as its factorization.

3243445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648694.

The product of its digits is 5760, while the sum is 25.

The square root of 3243445 is about 1800.9566902066. The cubic root of 3243445 is about 148.0251509484.

Adding to 3243445 its reverse (5443423), we get a palindrome (8686868).

The spelling of 3243445 in words is "three million, two hundred forty-three thousand, four hundred forty-five".