6649744896 has 100 divisors (see below), whose sum is σ = 19847861352. Its totient is φ = 2216567808.

The previous prime is 6649744877. The next prime is 6649744951. The reversal of 6649744896 is 6984479466.

6649744896 is a `hidden beast` number, since 6 + 64 + 97 + 4 + 489 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 38700 + ... + 121643.

Almost surely, 2^6649744896 is an apocalyptic number.

It is an amenable number.

6649744896 is an abundant number, since it is smaller than the sum of its proper divisors (13198116456).

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

6649744896 is an equidigital number, since it uses as much as digits as its factorization.

6649744896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160373 (or 160348 counting only the distinct ones).

The product of its digits is 62705664, while the sum is 63.

The square root of 6649744896 is about 81545.9679935188. The cubic root of 6649744896 is about 1880.4783089609.

The spelling of 6649744896 in words is "six billion, six hundred forty-nine million, seven hundred forty-four thousand, eight hundred ninety-six".