6448060644 has 24 divisors (see below), whose sum is σ = 15200585568. Its totient is φ = 2127194880.

The previous prime is 6448060631. The next prime is 6448060673. The reversal of 6448060644 is 4460608446.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6448060596 and 6448060605.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2768622 + ... + 2770949.

It is an arithmetic number, because the mean of its divisors is an integer number (633357732).

Almost surely, 2^6448060644 is an apocalyptic number.

It is an amenable number.

6448060644 is an abundant number, since it is smaller than the sum of its proper divisors (8752524924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6448060644 is a wasteful number, since it uses less digits than its factorization.

6448060644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5539675 (or 5539673 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 42.

The square root of 6448060644 is about 80299.8172102527. The cubic root of 6448060644 is about 1861.2714015192.

The spelling of 6448060644 in words is "six billion, four hundred forty-eight million, sixty thousand, six hundred forty-four".