6682221 has 48 divisors (see below), whose sum is σ = 12230400. Its totient is φ = 3421440.

The previous prime is 6682219. The next prime is 6682223. The reversal of 6682221 is 1222866.

It is an interprime number because it is at equal distance from previous prime (6682219) and next prime (6682223).

It is not a de Polignac number, because 6682221 - 2¹ = 6682219 is a prime.

6682221 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6682223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33480 + ... + 33678.

It is an arithmetic number, because the mean of its divisors is an integer number (254800).

Almost surely, 2^6682221 is an apocalyptic number.

It is an amenable number.

6682221 is a deficient number, since it is larger than the sum of its proper divisors (5548179).

6682221 is a wasteful number, since it uses less digits than its factorization.

6682221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 263 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 6682221 is about 2584.9992263055. Note that the first 3 decimals coincide. The cubic root of 6682221 is about 188.3534639684.

It can be divided in two parts, 6682 and 221, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 6682221 in words is "six million, six hundred eighty-two thousand, two hundred twenty-one".