6567280648 has 16 divisors (see below), whose sum is σ = 12318291180. Its totient is φ = 3282403008.

The previous prime is 6567280639. The next prime is 6567280661. The reversal of 6567280648 is 8460827656.

It can be written as a sum of positive squares in 2 ways, for example, as 6111799684 + 455480964 = 78178^2 + 21342^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6567280595 and 6567280604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131911 + ... + 174742.

Almost surely, 2^6567280648 is an apocalyptic number.

It is an amenable number.

6567280648 is a deficient number, since it is larger than the sum of its proper divisors (5751010532).

6567280648 is a wasteful number, since it uses less digits than its factorization.

6567280648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309336 (or 309332 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 52.

The square root of 6567280648 is about 81038.7601583341. The cubic root of 6567280648 is about 1872.6726107440.

The spelling of 6567280648 in words is "six billion, five hundred sixty-seven million, two hundred eighty thousand, six hundred forty-eight".