6712221 has 8 divisors (see below), whose sum is σ = 9007264. Its totient is φ = 4446000.

The previous prime is 6712193. The next prime is 6712243. The reversal of 6712221 is 1222176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6712221 - 2¹⁰ = 6711197 is a prime.

It is a Duffinian 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 (6712271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6655 + ... + 7596.

It is an arithmetic number, because the mean of its divisors is an integer number (1125908).

Almost surely, 2^6712221 is an apocalyptic number.

It is an amenable number.

6712221 is a deficient number, since it is larger than the sum of its proper divisors (2295043).

6712221 is a wasteful number, since it uses less digits than its factorization.

6712221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14411.

The product of its digits is 336, while the sum is 21.

The square root of 6712221 is about 2590.7954376986. The cubic root of 6712221 is about 188.6349157378.

Adding to 6712221 its reverse (1222176), we get a palindrome (7934397).

The spelling of 6712221 in words is "six million, seven hundred twelve thousand, two hundred twenty-one".