9972966 has 8 divisors (see below), whose sum is σ = 19945944. Its totient is φ = 3324320.

The previous prime is 9972913. The next prime is 9972973. The reversal of 9972966 is 6692799.

It is a happy number.

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

9972966 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 831075 + ... + 831086.

It is an arithmetic number, because the mean of its divisors is an integer number (2493243).

Almost surely, 2^9972966 is an apocalyptic number.

9972966 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.

9972966 is a wasteful number, since it uses less digits than its factorization.

9972966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662166.

The product of its digits is 367416, while the sum is 48.

The square root of 9972966 is about 3158.0003166561. Note that the first 3 decimals coincide. The cubic root of 9972966 is about 215.2491504996.

The spelling of 9972966 in words is "nine million, nine hundred seventy-two thousand, nine hundred sixty-six".