9867666 has 8 divisors (see below), whose sum is σ = 19735344. Its totient is φ = 3289220.

The previous prime is 9867659. The next prime is 9867677. The reversal of 9867666 is 6667689.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

9867666 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 822300 + ... + 822311.

It is an arithmetic number, because the mean of its divisors is an integer number (2466918).

Almost surely, 2^9867666 is an apocalyptic number.

9867666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

9867666 is a wasteful number, since it uses less digits than its factorization.

9867666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644616.

The product of its digits is 653184, while the sum is 48.

The square root of 9867666 is about 3141.2841323255. The cubic root of 9867666 is about 214.4888959211.

The spelling of 9867666 in words is "nine million, eight hundred sixty-seven thousand, six hundred sixty-six".