66000224 has 24 divisors (see below), whose sum is σ = 136778040. Its totient is φ = 31262976.

The previous prime is 66000223. The next prime is 66000229. The reversal of 66000224 is 42200066.

It is a junction number, because it is equal to n+sod(n) for n = 66000196 and 66000205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66000223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53669 + ... + 54884.

It is an arithmetic number, because the mean of its divisors is an integer number (5699085).

Almost surely, 2^66000224 is an apocalyptic number.

It is an amenable number.

66000224 is an abundant number, since it is smaller than the sum of its proper divisors (70777816).

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

66000224 is a wasteful number, since it uses less digits than its factorization.

66000224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108582 (or 108574 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 66000224 is about 8124.0521908713. The cubic root of 66000224 is about 404.1244592525.

The spelling of 66000224 in words is "sixty-six million, two hundred twenty-four", and thus it is an aban number.