6442220347 has 4 divisors (see below), whose sum is σ = 6523767520. Its totient is φ = 6360673176.

The previous prime is 6442220333. The next prime is 6442220419. The reversal of 6442220347 is 7430222446.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6442220347 - 2⁷ = 6442220219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6442220647) 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, 40773468 + ... + 40773625.

It is an arithmetic number, because the mean of its divisors is an integer number (1630941880).

Almost surely, 2^6442220347 is an apocalyptic number.

6442220347 is a deficient number, since it is larger than the sum of its proper divisors (81547173).

6442220347 is an equidigital number, since it uses as much as digits as its factorization.

6442220347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81547172.

The product of its (nonzero) digits is 64512, while the sum is 34.

The square root of 6442220347 is about 80263.4434035819. The cubic root of 6442220347 is about 1860.7092861813.

The spelling of 6442220347 in words is "six billion, four hundred forty-two million, two hundred twenty thousand, three hundred forty-seven".