6649047882 has 24 divisors (see below), whose sum is σ = 14410275204. Its totient is φ = 2215733184.

The previous prime is 6649047863. The next prime is 6649047883. The reversal of 6649047882 is 2887409466.

6649047882 is a `hidden beast` number, since 6 + 6 + 4 + 90 + 478 + 82 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6640457121 + 8590761 = 81489^2 + 2931^2 .

It is not an unprimeable number, because it can be changed into a prime (6649047883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17718 + ... + 116670.

Almost surely, 2^6649047882 is an apocalyptic number.

6649047882 is an abundant number, since it is smaller than the sum of its proper divisors (7761227322).

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

6649047882 is a wasteful number, since it uses less digits than its factorization.

6649047882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102694 (or 102691 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The square root of 6649047882 is about 81541.6941325111. The cubic root of 6649047882 is about 1880.4126039087.

The spelling of 6649047882 in words is "six billion, six hundred forty-nine million, forty-seven thousand, eight hundred eighty-two".