6448227865 has 8 divisors (see below), whose sum is σ = 8004696840. Its totient is φ = 4980700032.

The previous prime is 6448227827. The next prime is 6448227883. The reversal of 6448227865 is 5687228446.

It can be written as a sum of positive squares in 4 ways, for example, as 1861145881 + 4587081984 = 43141^2 + 67728^2 .

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 6448227865 - 2¹⁵ = 6448195097 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22235124 + ... + 22235413.

It is an arithmetic number, because the mean of its divisors is an integer number (1000587105).

Almost surely, 2^6448227865 is an apocalyptic number.

It is an amenable number.

6448227865 is a deficient number, since it is larger than the sum of its proper divisors (1556468975).

6448227865 is a wasteful number, since it uses less digits than its factorization.

6448227865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44470571.

The product of its digits is 5160960, while the sum is 52.

The square root of 6448227865 is about 80300.8584325224. The cubic root of 6448227865 is about 1861.2874911619.

The spelling of 6448227865 in words is "six billion, four hundred forty-eight million, two hundred twenty-seven thousand, eight hundred sixty-five".