6771321 has 12 divisors (see below), whose sum is σ = 10356372. Its totient is φ = 4248576.

The previous prime is 6771319. The next prime is 6771367. The reversal of 6771321 is 1231776.

It can be written as a sum of positive squares in 2 ways, for example, as 5934096 + 837225 = 2436^2 + 915^2 .

It is not a de Polignac number, because 6771321 - 2¹ = 6771319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6771311) 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 11 ways as a sum of consecutive naturals, for example, 21976 + ... + 22281.

It is an arithmetic number, because the mean of its divisors is an integer number (863031).

Almost surely, 2^6771321 is an apocalyptic number.

It is an amenable number.

6771321 is a deficient number, since it is larger than the sum of its proper divisors (3585051).

6771321 is a wasteful number, since it uses less digits than its factorization.

6771321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44280 (or 44277 counting only the distinct ones).

The product of its digits is 1764, while the sum is 27.

The square root of 6771321 is about 2602.1762046410. The cubic root of 6771321 is about 189.1869318747.

The spelling of 6771321 in words is "six million, seven hundred seventy-one thousand, three hundred twenty-one".