6679321 has 6 divisors (see below), whose sum is σ = 7341866. Its totient is φ = 6072000.

The previous prime is 6679313. The next prime is 6679327. The reversal of 6679321 is 1239766.

It can be written as a sum of positive squares in only one way, i.e., 3920400 + 2758921 = 1980^2 + 1661^2 .

It is not a de Polignac number, because 6679321 - 2³ = 6679313 is a prime.

It is a super-2 number, since 2×6679321² = 89226658042082, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6679327) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 27480 + ... + 27721.

Almost surely, 2^6679321 is an apocalyptic number.

It is an amenable number.

6679321 is a deficient number, since it is larger than the sum of its proper divisors (662545).

6679321 is a wasteful number, since it uses less digits than its factorization.

6679321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55223 (or 55212 counting only the distinct ones).

The product of its digits is 13608, while the sum is 34.

The square root of 6679321 is about 2584.4382368321. The cubic root of 6679321 is about 188.3262123464.

The spelling of 6679321 in words is "six million, six hundred seventy-nine thousand, three hundred twenty-one".