9666628 has 24 divisors (see below), whose sum is σ = 17640000. Its totient is φ = 4629408.

The previous prime is 9666623. The next prime is 9666661. The reversal of 9666628 is 8266669.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (9666623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19123 + ... + 19621.

It is an arithmetic number, because the mean of its divisors is an integer number (735000).

Almost surely, 2^9666628 is an apocalyptic number.

It is an amenable number.

9666628 is a deficient number, since it is larger than the sum of its proper divisors (7973372).

9666628 is a wasteful number, since it uses less digits than its factorization.

9666628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699 (or 697 counting only the distinct ones).

The product of its digits is 186624, while the sum is 43.

The square root of 9666628 is about 3109.1201327707. The cubic root of 9666628 is about 213.0222669162.

The spelling of 9666628 in words is "nine million, six hundred sixty-six thousand, six hundred twenty-eight".