66214332 has 72 divisors (see below), whose sum is σ = 175943040. Its totient is φ = 20956320.

The previous prime is 66214327. The next prime is 66214333. The reversal of 66214332 is 23341266.

66214332 is a `hidden beast` number, since 6 + 621 + 4 + 3 + 32 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 66214296 and 66214305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66214333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 174519 + ... + 174897.

Almost surely, 2^66214332 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 66214332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87971520).

66214332 is an abundant number, since it is smaller than the sum of its proper divisors (109728708).

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

66214332 is a wasteful number, since it uses less digits than its factorization.

66214332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623 (or 618 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 66214332 is about 8137.2189352383. The cubic root of 66214332 is about 404.5609874821.

Adding to 66214332 its reverse (23341266), we get a palindrome (89555598).

The spelling of 66214332 in words is "sixty-six million, two hundred fourteen thousand, three hundred thirty-two".