6669732672 has 224 divisors, whose sum is σ = 20961705600. Its totient is φ = 2072272896.

The previous prime is 6669732661. The next prime is 6669732721. The reversal of 6669732672 is 2762379666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3200943 + ... + 3203025.

Almost surely, 2^6669732672 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 6669732672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10480852800).

6669732672 is an abundant number, since it is smaller than the sum of its proper divisors (14291972928).

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

6669732672 is a wasteful number, since it uses less digits than its factorization.

6669732672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2230 (or 2214 counting only the distinct ones).

The product of its digits is 6858432, while the sum is 54.

The square root of 6669732672 is about 81668.4313061051. The cubic root of 6669732672 is about 1882.3605356912.

The spelling of 6669732672 in words is "six billion, six hundred sixty-nine million, seven hundred thirty-two thousand, six hundred seventy-two".