6712321 has 16 divisors (see below), whose sum is σ = 8432640. Its totient is φ = 5190480.

The previous prime is 6712289. The next prime is 6712333. The reversal of 6712321 is 1232176.

It is a cyclic number.

It is not a de Polignac number, because 6712321 - 2⁵ = 6712289 is a prime.

It is a Duffinian number.

6712321 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6712292 and 6712301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6712351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13540 + ... + 14026.

It is an arithmetic number, because the mean of its divisors is an integer number (527040).

Almost surely, 2^6712321 is an apocalyptic number.

It is an amenable number.

6712321 is a deficient number, since it is larger than the sum of its proper divisors (1720319).

6712321 is a wasteful number, since it uses less digits than its factorization.

6712321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684.

The product of its digits is 504, while the sum is 22.

The square root of 6712321 is about 2590.8147367189. The cubic root of 6712321 is about 188.6358525066.

Adding to 6712321 its reverse (1232176), we get a palindrome (7944497).

It can be divided in two parts, 671 and 2321, that added together give a palindrome (2992).

The spelling of 6712321 in words is "six million, seven hundred twelve thousand, three hundred twenty-one".