285566668 has 24 divisors (see below), whose sum is σ = 516741120. Its totient is φ = 137942160.

The previous prime is 285566653. The next prime is 285566717. The reversal of 285566668 is 866665582.

It is a happy number.

285566668 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87555 + ... + 90757.

It is an arithmetic number, because the mean of its divisors is an integer number (21530880).

Almost surely, 2^285566668 is an apocalyptic number.

It is an amenable number.

285566668 is a deficient number, since it is larger than the sum of its proper divisors (231174452).

285566668 is a wasteful number, since it uses less digits than its factorization.

285566668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3957 (or 3955 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 52.

The square root of 285566668 is about 16898.7179395361. The cubic root of 285566668 is about 658.5203061231.

The spelling of 285566668 in words is "two hundred eighty-five million, five hundred sixty-six thousand, six hundred sixty-eight".