230206666 has 8 divisors (see below), whose sum is σ = 351825444. Its totient is φ = 112931520.

The previous prime is 230206663. The next prime is 230206687. The reversal of 230206666 is 666602032.

It can be written as a sum of positive squares in 2 ways, for example, as 229977225 + 229441 = 15165^2 + 479^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (230206663) 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, 1085775 + ... + 1085986.

Almost surely, 2^230206666 is an apocalyptic number.

230206666 is a deficient number, since it is larger than the sum of its proper divisors (121618778).

230206666 is a wasteful number, since it uses less digits than its factorization.

230206666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2171816.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 230206666 is about 15172.5629344551. The cubic root of 230206666 is about 612.8760237773.

Adding to 230206666 its reverse (666602032), we get a palindrome (896808698).

The spelling of 230206666 in words is "two hundred thirty million, two hundred six thousand, six hundred sixty-six".