66033318 has 32 divisors (see below), whose sum is σ = 144186336. Its totient is φ = 20037888.

The previous prime is 66033311. The next prime is 66033343. The reversal of 66033318 is 81333066.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66033311) 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, 105 + ... + 11492.

It is an arithmetic number, because the mean of its divisors is an integer number (4505823).

Almost surely, 2^66033318 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66033318, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72093168).

66033318 is an abundant number, since it is smaller than the sum of its proper divisors (78153018).

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

66033318 is a wasteful number, since it uses less digits than its factorization.

66033318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11688.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 66033318 is about 8126.0887270568. The cubic root of 66033318 is about 404.1919936704.

The spelling of 66033318 in words is "sixty-six million, thirty-three thousand, three hundred eighteen".