6448643722 has 8 divisors (see below), whose sum is σ = 10093529376. Its totient is φ = 3084133932.

The previous prime is 6448643701. The next prime is 6448643807. The reversal of 6448643722 is 2273468446.

6448643722 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It is a Harshad number since it is a multiple of its sum of digits (46), and also a Moran number because the ratio is a prime number: 140187907 = 6448643722 / (6 + 4 + 4 + 8 + 6 + 4 + 3 + 7 + 2 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70093908 + ... + 70093999.

It is an arithmetic number, because the mean of its divisors is an integer number (1261691172).

Almost surely, 2^6448643722 is an apocalyptic number.

6448643722 is a deficient number, since it is larger than the sum of its proper divisors (3644885654).

6448643722 is a wasteful number, since it uses less digits than its factorization.

6448643722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140187932.

The product of its digits is 1548288, while the sum is 46.

The square root of 6448643722 is about 80303.4477591093. The cubic root of 6448643722 is about 1861.3275028162.

The spelling of 6448643722 in words is "six billion, four hundred forty-eight million, six hundred forty-three thousand, seven hundred twenty-two".