3421665343 has 4 divisors (see below), whose sum is σ = 3425677528. Its totient is φ = 3417653160.

The previous prime is 3421665307. The next prime is 3421665389. The reversal of 3421665343 is 3435661243.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3435661243 = 7 ⋅490808749.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3421665343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3421665043) 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, 2004813 + ... + 2006518.

It is an arithmetic number, because the mean of its divisors is an integer number (856419382).

Almost surely, 2^3421665343 is an apocalyptic number.

3421665343 is a deficient number, since it is larger than the sum of its proper divisors (4012185).

3421665343 is an equidigital number, since it uses as much as digits as its factorization.

3421665343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4012184.

The product of its digits is 155520, while the sum is 37.

The square root of 3421665343 is about 58495.0027181810. The cubic root of 3421665343 is about 1506.8817634198.

The spelling of 3421665343 in words is "three billion, four hundred twenty-one million, six hundred sixty-five thousand, three hundred forty-three".