66636032 has 36 divisors (see below), whose sum is σ = 134094576. Its totient is φ = 33047040.

The previous prime is 66636013. The next prime is 66636041. The reversal of 66636032 is 23063666.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 66636032.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32543 + ... + 34529.

Almost surely, 2^66636032 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 66636032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67047288).

66636032 is an abundant number, since it is smaller than the sum of its proper divisors (67458544).

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

66636032 is a wasteful number, since it uses less digits than its factorization.

66636032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134 (or 2120 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 32.

The square root of 66636032 is about 8163.0896111705. The cubic root of 66636032 is about 405.4180147788.

Adding to 66636032 its reverse (23063666), we get a palindrome (89699698).

The spelling of 66636032 in words is "sixty-six million, six hundred thirty-six thousand, thirty-two".