6647205632 has 108 divisors (see below), whose sum is σ = 14830781616. Its totient is φ = 2962759680.

The previous prime is 6647205583. The next prime is 6647205637. The reversal of 6647205632 is 2365027466.

It is a self number, because there is not a number n which added to its sum of digits gives 6647205632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6647205637) 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, 1568957 + ... + 1573187.

It is an arithmetic number, because the mean of its divisors is an integer number (137322052).

Almost surely, 2^6647205632 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 6647205632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7415390808).

6647205632 is an abundant number, since it is smaller than the sum of its proper divisors (8183575984).

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

6647205632 is a wasteful number, since it uses less digits than its factorization.

6647205632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4302 (or 4269 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 41.

The square root of 6647205632 is about 81530.3969817393. The cubic root of 6647205632 is about 1880.2389193867.

The spelling of 6647205632 in words is "six billion, six hundred forty-seven million, two hundred five thousand, six hundred thirty-two".