9876666 has 8 divisors (see below), whose sum is σ = 19753344. Its totient is φ = 3292220.

The previous prime is 9876641. The next prime is 9876673. The reversal of 9876666 is 6666789.

It is a happy number.

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

9876666 is an admirable number.

It is a d-powerful number, because it can be written as 9³ + 8⁷ + 7⁸ + 6⁵ + 6⁶ + 6⁷ + 6⁸ .

It is a Curzon number.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 823050 + ... + 823061.

It is an arithmetic number, because the mean of its divisors is an integer number (2469168).

Almost surely, 2^9876666 is an apocalyptic number.

9876666 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.

9876666 is a wasteful number, since it uses less digits than its factorization.

9876666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646116.

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

The square root of 9876666 is about 3142.7163410018. The cubic root of 9876666 is about 214.5540857195.

The spelling of 9876666 in words is "nine million, eight hundred seventy-six thousand, six hundred sixty-six".