6348421 has 4 divisors (see below), whose sum is σ = 6424992. Its totient is φ = 6271852.

The previous prime is 6348401. The next prime is 6348439. The reversal of 6348421 is 1248436.

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 6348421 - 2⁵ = 6348389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6348421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6348401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38161 + ... + 38326.

It is an arithmetic number, because the mean of its divisors is an integer number (1606248).

Almost surely, 2^6348421 is an apocalyptic number.

It is an amenable number.

6348421 is a deficient number, since it is larger than the sum of its proper divisors (76571).

6348421 is an equidigital number, since it uses as much as digits as its factorization.

6348421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76570.

The product of its digits is 4608, while the sum is 28.

The square root of 6348421 is about 2519.6073106736. The cubic root of 6348421 is about 185.1634396901.

It can be divided in two parts, 63 and 48421, that added together give a palindrome (48484).

The spelling of 6348421 in words is "six million, three hundred forty-eight thousand, four hundred twenty-one".