66986332 has 36 divisors (see below), whose sum is σ = 138427464. Its totient is φ = 28274400.

The previous prime is 66986321. The next prime is 66986351. The reversal of 66986332 is 23368966.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10582 + ... + 15682.

Almost surely, 2^66986332 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 66986332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69213732).

66986332 is an abundant number, since it is smaller than the sum of its proper divisors (71441132).

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

66986332 is a wasteful number, since it uses less digits than its factorization.

66986332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5186 (or 5177 counting only the distinct ones).

The product of its digits is 279936, while the sum is 43.

The square root of 66986332 is about 8184.5178233052. The cubic root of 66986332 is about 406.1271896392.

The spelling of 66986332 in words is "sixty-six million, nine hundred eighty-six thousand, three hundred thirty-two".