9661684692 has 48 divisors (see below), whose sum is σ = 24832184832. Its totient is φ = 2899354080.

The previous prime is 9661684691. The next prime is 9661684751. The reversal of 9661684692 is 2964861669.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9661684691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 341718 + ... + 368909.

It is an arithmetic number, because the mean of its divisors is an integer number (517337184).

Almost surely, 2^9661684692 is an apocalyptic number.

It is an amenable number.

9661684692 is an abundant number, since it is smaller than the sum of its proper divisors (15170500140).

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

9661684692 is a wasteful number, since it uses less digits than its factorization.

9661684692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710748 (or 710746 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 57.

The square root of 9661684692 is about 98293.8690458362. The cubic root of 9661684692 is about 2129.8594903896.

The spelling of 9661684692 in words is "nine billion, six hundred sixty-one million, six hundred eighty-four thousand, six hundred ninety-two".