6648847965 has 24 divisors (see below), whose sum is σ = 11527535448. Its totient is φ = 3545170560.

The previous prime is 6648847949. The next prime is 6648847967. The reversal of 6648847965 is 5697488466.

6648847965 is a `hidden beast` number, since 66 + 48 + 8 + 479 + 65 = 666.

6648847965 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1017546201 + 5631301764 = 31899^2 + 75042^2 .

It is not a de Polignac number, because 6648847965 - 2⁴ = 6648847949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6648847967) 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, 190795 + ... + 222935.

It is an arithmetic number, because the mean of its divisors is an integer number (480313977).

Almost surely, 2^6648847965 is an apocalyptic number.

It is an amenable number.

6648847965 is a deficient number, since it is larger than the sum of its proper divisors (4878687483).

6648847965 is a wasteful number, since it uses less digits than its factorization.

6648847965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36749 (or 36746 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 63.

The square root of 6648847965 is about 81540.4682657636. The cubic root of 6648847965 is about 1880.3937575906.

The spelling of 6648847965 in words is "six billion, six hundred forty-eight million, eight hundred forty-seven thousand, nine hundred sixty-five".