9966895 has 8 divisors (see below), whose sum is σ = 12252240. Its totient is φ = 7778880.

The previous prime is 9966883. The next prime is 9966937. The reversal of 9966895 is 5986699.

It is a happy number.

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

It is not a de Polignac number, because 9966895 - 2⁵ = 9966863 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 24105 + ... + 24514.

It is an arithmetic number, because the mean of its divisors is an integer number (1531530).

Almost surely, 2^9966895 is an apocalyptic number.

9966895 is a deficient number, since it is larger than the sum of its proper divisors (2285345).

9966895 is a wasteful number, since it uses less digits than its factorization.

9966895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48665.

The product of its digits is 1049760, while the sum is 52.

The square root of 9966895 is about 3157.0389607986. The cubic root of 9966895 is about 215.2054643034.

The spelling of 9966895 in words is "nine million, nine hundred sixty-six thousand, eight hundred ninety-five".