6448715650 has 48 divisors (see below), whose sum is σ = 13129112808. Its totient is φ = 2342016000.

The previous prime is 6448715639. The next prime is 6448715657. The reversal of 6448715650 is 565178446.

It can be written as a sum of positive squares in 12 ways, for example, as 1882605321 + 4566110329 = 43389^2 + 67573^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6448715650.

It is not an unprimeable number, because it can be changed into a prime (6448715657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41671 + ... + 120970.

Almost surely, 2^6448715650 is an apocalyptic number.

6448715650 is an abundant number, since it is smaller than the sum of its proper divisors (6680397158).

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

6448715650 is a wasteful number, since it uses less digits than its factorization.

6448715650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162727 (or 162722 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 46.

The square root of 6448715650 is about 80303.8956091172. The cubic root of 6448715650 is about 1861.3344231896.

The spelling of 6448715650 in words is "six billion, four hundred forty-eight million, seven hundred fifteen thousand, six hundred fifty".