8197315686 has 48 divisors (see below), whose sum is σ = 20642169600. Its totient is φ = 2302391664.

The previous prime is 8197315657. The next prime is 8197315717. The reversal of 8197315686 is 6865137918.

8197315686 is a `hidden beast` number, since 8 + 1 + 9 + 73 + 1 + 568 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 543906 + ... + 558773.

It is an arithmetic number, because the mean of its divisors is an integer number (430045200).

Almost surely, 2^8197315686 is an apocalyptic number.

8197315686 is an abundant number, since it is smaller than the sum of its proper divisors (12444853914).

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

8197315686 is a wasteful number, since it uses less digits than its factorization.

8197315686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102753 (or 1102750 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 8197315686 is about 90539.0285236152. The cubic root of 8197315686 is about 2016.3096106001.

The spelling of 8197315686 in words is "eight billion, one hundred ninety-seven million, three hundred fifteen thousand, six hundred eighty-six".