6734421 has 20 divisors (see below), whose sum is σ = 10210464. Its totient is φ = 4422600.

The previous prime is 6734401. The next prime is 6734443. The reversal of 6734421 is 1244376.

It is not a de Polignac number, because 6734421 - 2¹¹ = 6732373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6734401) 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 19 ways as a sum of consecutive naturals, for example, 5166 + ... + 6336.

Almost surely, 2^6734421 is an apocalyptic number.

It is an amenable number.

6734421 is a deficient number, since it is larger than the sum of its proper divisors (3476043).

6734421 is a wasteful number, since it uses less digits than its factorization.

6734421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254 (or 1245 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 6734421 is about 2595.0762994563. The cubic root of 6734421 is about 188.8426505943.

Adding to 6734421 its reverse (1244376), we get a palindrome (7978797).

The spelling of 6734421 in words is "six million, seven hundred thirty-four thousand, four hundred twenty-one".