66984324 has 48 divisors (see below), whose sum is σ = 174678336. Its totient is φ = 19801600.

The previous prime is 66984277. The next prime is 66984343. The reversal of 66984324 is 42348966.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 777 + ... + 11600.

It is an arithmetic number, because the mean of its divisors is an integer number (3639132).

Almost surely, 2^66984324 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 66984324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87339168).

66984324 is an abundant number, since it is smaller than the sum of its proper divisors (107694012).

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

66984324 is a wasteful number, since it uses less digits than its factorization.

66984324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12436 (or 12434 counting only the distinct ones).

The product of its digits is 248832, while the sum is 42.

The square root of 66984324 is about 8184.3951517507. The cubic root of 66984324 is about 406.1231315400.

The spelling of 66984324 in words is "sixty-six million, nine hundred eighty-four thousand, three hundred twenty-four".