6686860320 has 288 divisors, whose sum is σ = 26153487360. Its totient is φ = 1524049920.

The previous prime is 6686860309. The next prime is 6686860331. The reversal of 6686860320 is 230686866.

It is an interprime number because it is at equal distance from previous prime (6686860309) and next prime (6686860331).

It is a tau number, because it is divible by the number of its divisors (288).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4646161 + ... + 4647599.

It is an arithmetic number, because the mean of its divisors is an integer number (90810720).

Almost surely, 2^6686860320 is an apocalyptic number.

6686860320 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 6686860320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13076743680).

6686860320 is an abundant number, since it is smaller than the sum of its proper divisors (19466627040).

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

6686860320 is a wasteful number, since it uses less digits than its factorization.

6686860320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1928 (or 1917 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The square root of 6686860320 is about 81773.2249578063. The cubic root of 6686860320 is about 1883.9704378230.

The spelling of 6686860320 in words is "six billion, six hundred eighty-six million, eight hundred sixty thousand, three hundred twenty".