528066666 has 24 divisors (see below), whose sum is σ = 1165734180. Its totient is φ = 172700736.

The previous prime is 528066661. The next prime is 528066673. The reversal of 528066666 is 666660825.

It can be written as a sum of positive squares in 2 ways, for example, as 446688225 + 81378441 = 21135^2 + 9021^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

528066666 is a modest number, since divided by 66666 gives 5280 as remainder.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (528066661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 275811 + ... + 277718.

Almost surely, 2^528066666 is an apocalyptic number.

528066666 is an abundant number, since it is smaller than the sum of its proper divisors (637667514).

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

528066666 is a wasteful number, since it uses less digits than its factorization.

528066666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553590 (or 553587 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 528066666 is about 22979.7011729918. The cubic root of 528066666 is about 808.2820195246.

The spelling of 528066666 in words is "five hundred twenty-eight million, sixty-six thousand, six hundred sixty-six".