6647470848 has 72 divisors (see below), whose sum is σ = 19657761200. Its totient is φ = 2215821312.

The previous prime is 6647470847. The next prime is 6647470859. The reversal of 6647470848 is 8480747466.

6647470848 is a `hidden beast` number, since 66 + 474 + 70 + 8 + 48 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 6647470794 and 6647470803.

It is not an unprimeable number, because it can be changed into a prime (6647470847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 473953 + ... + 487776.

Almost surely, 2^6647470848 is an apocalyptic number.

It is an amenable number.

6647470848 is an abundant number, since it is smaller than the sum of its proper divisors (13010290352).

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

6647470848 is an equidigital number, since it uses as much as digits as its factorization.

6647470848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961754 (or 961734 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 54.

The square root of 6647470848 is about 81532.0234509116. The cubic root of 6647470848 is about 1880.2639255242.

The spelling of 6647470848 in words is "six billion, six hundred forty-seven million, four hundred seventy thousand, eight hundred forty-eight".