6684945120 has 768 divisors, whose sum is σ = 28165294080. Its totient is φ = 1449197568.

The previous prime is 6684945119. The next prime is 6684945131. The reversal of 6684945120 is 215494866.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 68916912 + ... + 68917008.

It is an arithmetic number, because the mean of its divisors is an integer number (36673560).

Almost surely, 2^6684945120 is an apocalyptic number.

6684945120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6684945120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14082647040).

6684945120 is an abundant number, since it is smaller than the sum of its proper divisors (21480348960).

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

6684945120 is a wasteful number, since it uses less digits than its factorization.

6684945120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 6684945120 is about 81761.5136846181. The cubic root of 6684945120 is about 1883.7905564566.

The spelling of 6684945120 in words is "six billion, six hundred eighty-four million, nine hundred forty-five thousand, one hundred twenty".