6801221 has 8 divisors (see below), whose sum is σ = 8182080. Its totient is φ = 5522688.

The previous prime is 6801217. The next prime is 6801227. The reversal of 6801221 is 1221086.

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

It is a cyclic number.

It is not a de Polignac number, because 6801221 - 2² = 6801217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6801193 and 6801202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6801227) 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, 25436 + ... + 25701.

It is an arithmetic number, because the mean of its divisors is an integer number (1022760).

Almost surely, 2^6801221 is an apocalyptic number.

It is an amenable number.

6801221 is a deficient number, since it is larger than the sum of its proper divisors (1380859).

6801221 is a wasteful number, since it uses less digits than its factorization.

6801221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51163.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 6801221 is about 2607.9150676354. The cubic root of 6801221 is about 189.4649861166.

The spelling of 6801221 in words is "six million, eight hundred one thousand, two hundred twenty-one".