9708666 has 48 divisors (see below), whose sum is σ = 22546080. Its totient is φ = 2763520.

The previous prime is 9708661. The next prime is 9708679. The reversal of 9708666 is 6668079.

It is a happy number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9708661) 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, 18820 + ... + 19328.

It is an arithmetic number, because the mean of its divisors is an integer number (469710).

Almost surely, 2^9708666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9708666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11273040).

9708666 is an abundant number, since it is smaller than the sum of its proper divisors (12837414).

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

9708666 is a wasteful number, since it uses less digits than its factorization.

9708666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559 (or 542 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 9708666 is about 3115.8732323379. The cubic root of 9708666 is about 213.3306157423.

The spelling of 9708666 in words is "nine million, seven hundred eight thousand, six hundred sixty-six".