6821272 has 16 divisors (see below), whose sum is σ = 12945240. Its totient is φ = 3369216.

The previous prime is 6821263. The next prime is 6821281. The reversal of 6821272 is 2721286.

It is an interprime number because it is at equal distance from previous prime (6821263) and next prime (6821281).

It is a self number, because there is not a number n which added to its sum of digits gives 6821272.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4473 + ... + 5800.

Almost surely, 2^6821272 is an apocalyptic number.

It is an amenable number.

6821272 is a deficient number, since it is larger than the sum of its proper divisors (6123968).

6821272 is a wasteful number, since it uses less digits than its factorization.

6821272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10362 (or 10358 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 6821272 is about 2611.7564970724. The cubic root of 6821272 is about 189.6509936604.

The spelling of 6821272 in words is "six million, eight hundred twenty-one thousand, two hundred seventy-two".