7666686333 has 48 divisors (see below), whose sum is σ = 12629897280. Its totient is φ = 4451231232.

The previous prime is 7666686331. The next prime is 7666686361. The reversal of 7666686333 is 3336866667.

It is a happy number.

It is not a de Polignac number, because 7666686333 - 2¹ = 7666686331 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7666686333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7666686331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94335 + ... + 155667.

It is an arithmetic number, because the mean of its divisors is an integer number (263122860).

Almost surely, 2^7666686333 is an apocalyptic number.

It is an amenable number.

7666686333 is a deficient number, since it is larger than the sum of its proper divisors (4963210947).

7666686333 is a wasteful number, since it uses less digits than its factorization.

7666686333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61418 (or 61415 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 54.

The square root of 7666686333 is about 87559.6158796965. The cubic root of 7666686333 is about 1971.8289192587.

The spelling of 7666686333 in words is "seven billion, six hundred sixty-six million, six hundred eighty-six thousand, three hundred thirty-three".