6870531720 has 128 divisors (see below), whose sum is σ = 22218618240. Its totient is φ = 1689569280.

The previous prime is 6870531719. The next prime is 6870531737. The reversal of 6870531720 is 271350786.

It is a super-3 number, since 3×6870531720³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2724060 + ... + 2726580.

It is an arithmetic number, because the mean of its divisors is an integer number (173582955).

Almost surely, 2^6870531720 is an apocalyptic number.

6870531720 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 6870531720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11109309120).

6870531720 is an abundant number, since it is smaller than the sum of its proper divisors (15348086520).

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

6870531720 is a wasteful number, since it uses less digits than its factorization.

6870531720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4295 (or 4291 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 39.

The square root of 6870531720 is about 82888.6706371866. The cubic root of 6870531720 is about 1901.0641979175.

The spelling of 6870531720 in words is "six billion, eight hundred seventy million, five hundred thirty-one thousand, seven hundred twenty".