66043224 has 96 divisors (see below), whose sum is σ = 197935920. Its totient is φ = 19761408.

The previous prime is 66043217. The next prime is 66043231. The reversal of 66043224 is 42234066.

66043224 is a `hidden beast` number, since 6 + 604 + 32 + 24 = 666.

It is an interprime number because it is at equal distance from previous prime (66043217) and next prime (66043231).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33679 + ... + 35585.

Almost surely, 2^66043224 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 66043224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98967960).

66043224 is an abundant number, since it is smaller than the sum of its proper divisors (131892696).

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

66043224 is a wasteful number, since it uses less digits than its factorization.

66043224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969 (or 1962 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 66043224 is about 8126.6982225256. The cubic root of 66043224 is about 404.2122043045.

The spelling of 66043224 in words is "sixty-six million, forty-three thousand, two hundred twenty-four".