6731420 has 12 divisors (see below), whose sum is σ = 14136024. Its totient is φ = 2692560.

The previous prime is 6731407. The next prime is 6731437. The reversal of 6731420 is 241376.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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, 168266 + ... + 168305.

It is an arithmetic number, because the mean of its divisors is an integer number (1178002).

Almost surely, 2^6731420 is an apocalyptic number.

It is an amenable number.

6731420 is an abundant number, since it is smaller than the sum of its proper divisors (7404604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6731420 is a wasteful number, since it uses less digits than its factorization.

6731420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336580 (or 336578 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 6731420 is about 2594.4980246668. The cubic root of 6731420 is about 188.8145956709.

Adding to 6731420 its reverse (241376), we get a palindrome (6972796).

The spelling of 6731420 in words is "six million, seven hundred thirty-one thousand, four hundred twenty".