6735981720 has 384 divisors, whose sum is σ = 23071703040. Its totient is φ = 1570682880.

The previous prime is 6735981713. The next prime is 6735981739. The reversal of 6735981720 is 271895376.

It is a self number, because there is not a number n which added to its sum of digits gives 6735981720.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 35266825 + ... + 35267015.

It is an arithmetic number, because the mean of its divisors is an integer number (60082560).

Almost surely, 2^6735981720 is an apocalyptic number.

6735981720 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 6735981720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11535851520).

6735981720 is an abundant number, since it is smaller than the sum of its proper divisors (16335721320).

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

6735981720 is a wasteful number, since it uses less digits than its factorization.

6735981720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 48.

The square root of 6735981720 is about 82073.0267505713. The cubic root of 6735981720 is about 1888.5723772986.

The spelling of 6735981720 in words is "six billion, seven hundred thirty-five million, nine hundred eighty-one thousand, seven hundred twenty".