6647467936 has 48 divisors (see below), whose sum is σ = 13419665280. Its totient is φ = 3239872000.

The previous prime is 6647467867. The next prime is 6647467961. The reversal of 6647467936 is 6397647466.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368700 + ... + 386308.

It is an arithmetic number, because the mean of its divisors is an integer number (279576360).

Almost surely, 2^6647467936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6647467936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6709832640).

6647467936 is an abundant number, since it is smaller than the sum of its proper divisors (6772197344).

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

6647467936 is a wasteful number, since it uses less digits than its factorization.

6647467936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17917 (or 17909 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 58.

The square root of 6647467936 is about 81532.0055928958. The cubic root of 6647467936 is about 1880.2636509672.

The spelling of 6647467936 in words is "six billion, six hundred forty-seven million, four hundred sixty-seven thousand, nine hundred thirty-six".