33660666 has 96 divisors (see below), whose sum is σ = 84651840. Its totient is φ = 9580032.

The previous prime is 33660659. The next prime is 33660673. The reversal of 33660666 is 66606633.

33660666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (33660659) and next prime (33660673).

It is a super-2 number, since 2×33660666² = 2266080871127112, which contains 22 as substring.

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 33660666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 297826 + ... + 297938.

It is an arithmetic number, because the mean of its divisors is an integer number (881790).

Almost surely, 2^33660666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33660666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42325920).

33660666 is an abundant number, since it is smaller than the sum of its proper divisors (50991174).

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

33660666 is a wasteful number, since it uses less digits than its factorization.

33660666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 36.

The square root of 33660666 is about 5801.7812781938. The cubic root of 33660666 is about 322.8798193091.

The spelling of 33660666 in words is "thirty-three million, six hundred sixty thousand, six hundred sixty-six".