6657949960 has 16 divisors (see below), whose sum is σ = 14980387500. Its totient is φ = 2663179968.

The previous prime is 6657949939. The next prime is 6657950009. The reversal of 6657949960 is 699497566.

It can be written as a sum of positive squares in 2 ways, for example, as 6219215044 + 438734916 = 78862^2 + 20946^2 .

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, 83224335 + ... + 83224414.

Almost surely, 2^6657949960 is an apocalyptic number.

It is an amenable number.

6657949960 is an abundant number, since it is smaller than the sum of its proper divisors (8322437540).

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

6657949960 is a wasteful number, since it uses less digits than its factorization.

6657949960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166448760 (or 166448756 counting only the distinct ones).

The product of its (nonzero) digits is 22044960, while the sum is 61.

The square root of 6657949960 is about 81596.2619241838. The cubic root of 6657949960 is about 1881.2514264953.

The spelling of 6657949960 in words is "six billion, six hundred fifty-seven million, nine hundred forty-nine thousand, nine hundred sixty".