3243405 has 24 divisors (see below), whose sum is σ = 5707296. Its totient is φ = 1571680.

The previous prime is 3243397. The next prime is 3243467. The reversal of 3243405 is 5043423.

It is a happy number.

It is not a de Polignac number, because 3243405 - 2³ = 3243397 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 922 + ... + 2708.

It is an arithmetic number, because the mean of its divisors is an integer number (237804).

Almost surely, 2^3243405 is an apocalyptic number.

It is an amenable number.

3243405 is a deficient number, since it is larger than the sum of its proper divisors (2463891).

3243405 is a wasteful number, since it uses less digits than its factorization.

3243405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817 (or 1806 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 3243405 is about 1800.9455849636. The cubic root of 3243405 is about 148.0245424359.

Adding to 3243405 its reverse (5043423), we get a palindrome (8286828).

The spelling of 3243405 in words is "three million, two hundred forty-three thousand, four hundred five".