3421345 has 4 divisors (see below), whose sum is σ = 4105620. Its totient is φ = 2737072.

The previous prime is 3421331. The next prime is 3421373. The reversal of 3421345 is 5431243.

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 1373584 + 2047761 = 1172^2 + 1431^2 .

It is a cyclic number.

It is not a de Polignac number, because 3421345 - 2¹³ = 3413153 is a prime.

3421345 is a lucky 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, 342130 + ... + 342139.

It is an arithmetic number, because the mean of its divisors is an integer number (1026405).

Almost surely, 2^3421345 is an apocalyptic number.

It is an amenable number.

3421345 is a deficient number, since it is larger than the sum of its proper divisors (684275).

3421345 is an equidigital number, since it uses as much as digits as its factorization.

3421345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684274.

The product of its digits is 1440, while the sum is 22.

The square root of 3421345 is about 1849.6878114968. The cubic root of 3421345 is about 150.6834736213.

Adding to 3421345 its reverse (5431243), we get a palindrome (8852588).

The spelling of 3421345 in words is "three million, four hundred twenty-one thousand, three hundred forty-five".