6666831360 has 480 divisors, whose sum is σ = 27382747392. Its totient is φ = 1522851840.

The previous prime is 6666831323. The next prime is 6666831371. The reversal of 6666831360 is 631386666.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (480).

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 47 ways as a sum of consecutive naturals, for example, 4353795 + ... + 4355325.

Almost surely, 2^6666831360 is an apocalyptic number.

6666831360 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 6666831360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13691373696).

6666831360 is an abundant number, since it is smaller than the sum of its proper divisors (20715916032).

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

6666831360 is an equidigital number, since it uses as much as digits as its factorization.

6666831360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576 (or 1548 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The square root of 6666831360 is about 81650.6666231207. Note that the first 4 decimals coincide. The cubic root of 6666831360 is about 1882.0875558705.

The spelling of 6666831360 in words is "six billion, six hundred sixty-six million, eight hundred thirty-one thousand, three hundred sixty".