9947683686 has 32 divisors (see below), whose sum is σ = 20072521728. Its totient is φ = 3286422720.

The previous prime is 9947683661. The next prime is 9947683741. The reversal of 9947683686 is 6863867499.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 803866 + ... + 816146.

It is an arithmetic number, because the mean of its divisors is an integer number (627266304).

Almost surely, 2^9947683686 is an apocalyptic number.

9947683686 is an abundant number, since it is smaller than the sum of its proper divisors (10124838042).

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

9947683686 is a wasteful number, since it uses less digits than its factorization.

9947683686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13476.

The product of its digits is 94058496, while the sum is 66.

The square root of 9947683686 is about 99738.0754075393. The cubic root of 9947683686 is about 2150.6710496639.

The spelling of 9947683686 in words is "nine billion, nine hundred forty-seven million, six hundred eighty-three thousand, six hundred eighty-six".