6686115471 has 24 divisors (see below), whose sum is σ = 11059568000. Its totient is φ = 3812962896.

The previous prime is 6686115391. The next prime is 6686115473. The reversal of 6686115471 is 1745116866.

6686115471 is a `hidden beast` number, since 6 + 68 + 6 + 115 + 471 = 666.

It is not a de Polignac number, because 6686115471 - 2⁷ = 6686115343 is a prime.

It is a super-3 number, since 3×6686115471³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6686115473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74905 + ... + 137778.

Almost surely, 2^6686115471 is an apocalyptic number.

6686115471 is a deficient number, since it is larger than the sum of its proper divisors (4373452529).

6686115471 is a wasteful number, since it uses less digits than its factorization.

6686115471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213195 (or 213192 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 6686115471 is about 81768.6704734766. The cubic root of 6686115471 is about 1883.9004834380.

The spelling of 6686115471 in words is "six billion, six hundred eighty-six million, one hundred fifteen thousand, four hundred seventy-one".