666683336 has 64 divisors (see below), whose sum is σ = 1439337600. Its totient is φ = 286528000.

The previous prime is 666683333. The next prime is 666683341. The reversal of 666683336 is 633386666.

It is not an unprimeable number, because it can be changed into a prime (666683333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178286 + ... + 181986.

It is an arithmetic number, because the mean of its divisors is an integer number (22489650).

Almost surely, 2^666683336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 666683336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (719668800).

666683336 is an abundant number, since it is smaller than the sum of its proper divisors (772654264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

666683336 is a wasteful number, since it uses less digits than its factorization.

666683336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3830 (or 3826 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 47.

The square root of 666683336 is about 25820.2117729503. The cubic root of 666683336 is about 873.5877456776.

The spelling of 666683336 in words is "six hundred sixty-six million, six hundred eighty-three thousand, three hundred thirty-six".