6842574221 has 16 divisors (see below), whose sum is σ = 8222404608. Its totient is φ = 5567218800.

The previous prime is 6842574209. The next prime is 6842574247. The reversal of 6842574221 is 1224752486.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6842574221 - 2²² = 6838379917 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 (6842574281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141125 + ... + 183306.

It is an arithmetic number, because the mean of its divisors is an integer number (513900288).

Almost surely, 2^6842574221 is an apocalyptic number.

It is an amenable number.

6842574221 is a deficient number, since it is larger than the sum of its proper divisors (1379830387).

6842574221 is a wasteful number, since it uses less digits than its factorization.

6842574221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324592.

The product of its digits is 215040, while the sum is 41.

The square root of 6842574221 is about 82719.8538502094. The cubic root of 6842574221 is about 1898.4820952446.

The spelling of 6842574221 in words is "six billion, eight hundred forty-two million, five hundred seventy-four thousand, two hundred twenty-one".