6801347221 has 4 divisors (see below), whose sum is σ = 6815199744. Its totient is φ = 6787494700.

The previous prime is 6801347209. The next prime is 6801347243. The reversal of 6801347221 is 1227431086.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6801347221 - 2⁷ = 6801347093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6801347821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6925525 + ... + 6926506.

It is an arithmetic number, because the mean of its divisors is an integer number (1703799936).

Almost surely, 2^6801347221 is an apocalyptic number.

It is an amenable number.

6801347221 is a deficient number, since it is larger than the sum of its proper divisors (13852523).

6801347221 is a wasteful number, since it uses less digits than its factorization.

6801347221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13852522.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 6801347221 is about 82470.2808349772. The cubic root of 6801347221 is about 1894.6615817632.

The spelling of 6801347221 in words is "six billion, eight hundred one million, three hundred forty-seven thousand, two hundred twenty-one".