6681067560 has 96 divisors (see below), whose sum is σ = 22462245000. Its totient is φ = 1720180224.

The previous prime is 6681067543. The next prime is 6681067567. The reversal of 6681067560 is 657601866.

6681067560 is a `hidden beast` number, since 6 + 6 + 81 + 0 + 6 + 7 + 560 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3757935204 + 2923132356 = 61302^2 + 54066^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (6681067567) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 309535 + ... + 330414.

Almost surely, 2^6681067560 is an apocalyptic number.

6681067560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6681067560 is an abundant number, since it is smaller than the sum of its proper divisors (15781177440).

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

6681067560 is a wasteful number, since it uses less digits than its factorization.

6681067560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639995 (or 639988 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 6681067560 is about 81737.7976214187. The cubic root of 6681067560 is about 1883.4262590917.

The spelling of 6681067560 in words is "six billion, six hundred eighty-one million, sixty-seven thousand, five hundred sixty".