6448860561 has 16 divisors (see below), whose sum is σ = 10101712320. Its totient is φ = 3607753920.

The previous prime is 6448860557. The next prime is 6448860571. The reversal of 6448860561 is 1650688446.

It is not a de Polignac number, because 6448860561 - 2² = 6448860557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6448860561.

It is not an unprimeable number, because it can be changed into a prime (6448860541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7515726 + ... + 7516583.

It is an arithmetic number, because the mean of its divisors is an integer number (631357020).

Almost surely, 2^6448860561 is an apocalyptic number.

It is an amenable number.

6448860561 is a deficient number, since it is larger than the sum of its proper divisors (3652851759).

6448860561 is a wasteful number, since it uses less digits than its factorization.

6448860561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15032336.

The product of its (nonzero) digits is 1105920, while the sum is 48.

The square root of 6448860561 is about 80304.7978703639. The cubic root of 6448860561 is about 1861.3483652843.

The spelling of 6448860561 in words is "six billion, four hundred forty-eight million, eight hundred sixty thousand, five hundred sixty-one".