6733421 has 4 divisors (see below), whose sum is σ = 6739200. Its totient is φ = 6727644.

The previous prime is 6733393. The next prime is 6733439. The reversal of 6733421 is 1243376.

6733421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6733421 - 2⁶ = 6733357 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 (6733121) 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, 461 + ... + 3698.

It is an arithmetic number, because the mean of its divisors is an integer number (1684800).

Almost surely, 2^6733421 is an apocalyptic number.

It is an amenable number.

6733421 is a deficient number, since it is larger than the sum of its proper divisors (5779).

6733421 is a wasteful number, since it uses less digits than its factorization.

6733421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5778.

The product of its digits is 3024, while the sum is 26.

The square root of 6733421 is about 2594.8836197410. The cubic root of 6733421 is about 188.8333029954.

Adding to 6733421 its reverse (1243376), we get a palindrome (7976797).

The spelling of 6733421 in words is "six million, seven hundred thirty-three thousand, four hundred twenty-one".