6606321 has 8 divisors (see below), whose sum is σ = 8820384. Its totient is φ = 4398240.

The previous prime is 6606307. The next prime is 6606323. The reversal of 6606321 is 1236066.

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

It is not a de Polignac number, because 6606321 - 2¹⁰ = 6605297 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6606291 and 6606300.

It is not an unprimeable number, because it can be changed into a prime (6606323) 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 7 ways as a sum of consecutive naturals, for example, 3130 + ... + 4796.

It is an arithmetic number, because the mean of its divisors is an integer number (1102548).

Almost surely, 2^6606321 is an apocalyptic number.

It is an amenable number.

6606321 is a deficient number, since it is larger than the sum of its proper divisors (2214063).

6606321 is a wasteful number, since it uses less digits than its factorization.

6606321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2991.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 6606321 is about 2570.2764442760. The cubic root of 6606321 is about 187.6376092040.

The spelling of 6606321 in words is "six million, six hundred six thousand, three hundred twenty-one".