6686155080 has 288 divisors, whose sum is σ = 25292849400. Its totient is φ = 1525370880.

The previous prime is 6686155067. The next prime is 6686155103. The reversal of 6686155080 is 805516866.

6686155080 is a `hidden beast` number, since 66 + 86 + 1 + 5 + 508 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6665416164 + 20738916 = 81642^2 + 4554^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 736006 + ... + 745034.

Almost surely, 2^6686155080 is an apocalyptic number.

6686155080 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 6686155080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12646424700).

6686155080 is an abundant number, since it is smaller than the sum of its proper divisors (18606694320).

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

6686155080 is a wasteful number, since it uses less digits than its factorization.

6686155080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9085 (or 9067 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 6686155080 is about 81768.9126746834. The cubic root of 6686155080 is about 1883.9042035486.

The spelling of 6686155080 in words is "six billion, six hundred eighty-six million, one hundred fifty-five thousand, eighty".