66327632 has 80 divisors (see below), whose sum is σ = 157132800. Its totient is φ = 26490240.

The previous prime is 66327619. The next prime is 66327637. The reversal of 66327632 is 23672366.

It is a junction number, because it is equal to n+sod(n) for n = 66327592 and 66327601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66327637) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 150869 + ... + 151307.

It is an arithmetic number, because the mean of its divisors is an integer number (1964160).

Almost surely, 2^66327632 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 66327632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78566400).

66327632 is an abundant number, since it is smaller than the sum of its proper divisors (90805168).

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

66327632 is a wasteful number, since it uses less digits than its factorization.

66327632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544 (or 538 counting only the distinct ones).

The product of its digits is 54432, while the sum is 35.

The square root of 66327632 is about 8144.1777976663. The cubic root of 66327632 is about 404.7916054335.

Adding to 66327632 its reverse (23672366), we get a palindrome (89999998).

The spelling of 66327632 in words is "sixty-six million, three hundred twenty-seven thousand, six hundred thirty-two".