6448799865 has 8 divisors (see below), whose sum is σ = 10318079808. Its totient is φ = 3439359920.

The previous prime is 6448799843. The next prime is 6448799897. The reversal of 6448799865 is 5689978446.

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

It is not a de Polignac number, because 6448799865 - 2⁶ = 6448799801 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6448799796 and 6448799805.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214959981 + ... + 214960010.

It is an arithmetic number, because the mean of its divisors is an integer number (1289759976).

Almost surely, 2^6448799865 is an apocalyptic number.

It is an amenable number.

6448799865 is a deficient number, since it is larger than the sum of its proper divisors (3869279943).

6448799865 is a wasteful number, since it uses less digits than its factorization.

6448799865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429919999.

The product of its digits is 104509440, while the sum is 66.

The square root of 6448799865 is about 80304.4199593024. The cubic root of 6448799865 is about 1861.3425256607.

The spelling of 6448799865 in words is "six billion, four hundred forty-eight million, seven hundred ninety-nine thousand, eight hundred sixty-five".