229566666 has 48 divisors (see below), whose sum is σ = 535473504. Its totient is φ = 65421216.

The previous prime is 229566647. The next prime is 229566679. The reversal of 229566666 is 666665922.

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, 153016 + ... + 154508.

It is an arithmetic number, because the mean of its divisors is an integer number (11155698).

Almost surely, 2^229566666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 229566666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267736752).

229566666 is an abundant number, since it is smaller than the sum of its proper divisors (305906838).

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

229566666 is a wasteful number, since it uses less digits than its factorization.

229566666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2035 (or 2028 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 48.

The square root of 229566666 is about 15151.4575536481. The cubic root of 229566666 is about 612.3075422540.

The spelling of 229566666 in words is "two hundred twenty-nine million, five hundred sixty-six thousand, six hundred sixty-six".