6672321 has 16 divisors (see below), whose sum is σ = 10153600. Its totient is φ = 4327344.

The previous prime is 6672319. The next prime is 6672331. The reversal of 6672321 is 1232766.

It is a happy number.

6672321 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6672321 - 2¹ = 6672319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6672301) 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 15 ways as a sum of consecutive naturals, for example, 2341 + ... + 4338.

It is an arithmetic number, because the mean of its divisors is an integer number (634600).

Almost surely, 2^6672321 is an apocalyptic number.

It is an amenable number.

6672321 is a deficient number, since it is larger than the sum of its proper divisors (3481279).

6672321 is a wasteful number, since it uses less digits than its factorization.

6672321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6725 (or 6719 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 6672321 is about 2583.0836223398. The cubic root of 6672321 is about 188.2604000540.

The spelling of 6672321 in words is "six million, six hundred seventy-two thousand, three hundred twenty-one".