66228200 has 24 divisors (see below), whose sum is σ = 153981030. Its totient is φ = 26491200.

The previous prime is 66228191. The next prime is 66228221. The reversal of 66228200 is 282266.

It can be written as a sum of positive squares in 3 ways, for example, as 61183684 + 5044516 = 7822^2 + 2246^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66228200.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 165371 + ... + 165770.

Almost surely, 2^66228200 is an apocalyptic number.

It is an amenable number.

66228200 is an abundant number, since it is smaller than the sum of its proper divisors (87752830).

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

66228200 is a wasteful number, since it uses less digits than its factorization.

66228200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331157 (or 331148 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 66228200 is about 8138.0710245119. The cubic root of 66228200 is about 404.5892294048.

The spelling of 66228200 in words is "sixty-six million, two hundred twenty-eight thousand, two hundred".