6343421 has 4 divisors (see below), whose sum is σ = 7249632. Its totient is φ = 5437212.

The previous prime is 6343417. The next prime is 6343429. The reversal of 6343421 is 1243436.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6343421 - 2² = 6343417 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 (6343429) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 453095 + ... + 453108.

It is an arithmetic number, because the mean of its divisors is an integer number (1812408).

Almost surely, 2^6343421 is an apocalyptic number.

It is an amenable number.

6343421 is a deficient number, since it is larger than the sum of its proper divisors (906211).

6343421 is an equidigital number, since it uses as much as digits as its factorization.

6343421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906210.

The product of its digits is 1728, while the sum is 23.

The square root of 6343421 is about 2518.6148971210. The cubic root of 6343421 is about 185.1148155066.

Adding to 6343421 its reverse (1243436), we get a palindrome (7586857).

The spelling of 6343421 in words is "six million, three hundred forty-three thousand, four hundred twenty-one".