66822132 has 48 divisors (see below), whose sum is σ = 168920640. Its totient is φ = 20437248.

The previous prime is 66822131. The next prime is 66822149. The reversal of 66822132 is 23122866.

It is a self number, because there is not a number n which added to its sum of digits gives 66822132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66822131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26728 + ... + 29120.

It is an arithmetic number, because the mean of its divisors is an integer number (3519180).

Almost surely, 2^66822132 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 66822132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84460320).

66822132 is an abundant number, since it is smaller than the sum of its proper divisors (102098508).

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

66822132 is a wasteful number, since it uses less digits than its factorization.

66822132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2592 (or 2590 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 66822132 is about 8174.4805339544. The cubic root of 66822132 is about 405.7950788694.

Adding to 66822132 its reverse (23122866), we get a palindrome (89944998).

The spelling of 66822132 in words is "sixty-six million, eight hundred twenty-two thousand, one hundred thirty-two".