9766666 has 32 divisors (see below), whose sum is σ = 18240768. Its totient is φ = 3818880.

The previous prime is 9766637. The next prime is 9766667. The reversal of 9766666 is 6666679.

It is a happy number.

9766666 is a modest number, since divided by 6666 gives 976 as remainder.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9766667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18486 + ... + 19006.

It is an arithmetic number, because the mean of its divisors is an integer number (570024).

Almost surely, 2^9766666 is an apocalyptic number.

9766666 is a deficient number, since it is larger than the sum of its proper divisors (8474102).

9766666 is a wasteful number, since it uses less digits than its factorization.

9766666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646.

The product of its digits is 489888, while the sum is 46.

The square root of 9766666 is about 3125.1665555615. The cubic root of 9766666 is about 213.7545880939.

The spelling of 9766666 in words is "nine million, seven hundred sixty-six thousand, six hundred sixty-six".