284206666 has 8 divisors (see below), whose sum is σ = 432150084. Its totient is φ = 140156640.

The previous prime is 284206621. The next prime is 284206669. The reversal of 284206666 is 666602482.

284206666 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 279859441 + 4347225 = 16729^2 + 2085^2 .

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 (284206669) 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, 973165 + ... + 973456.

Almost surely, 2^284206666 is an apocalyptic number.

284206666 is a deficient number, since it is larger than the sum of its proper divisors (147943418).

284206666 is a wasteful number, since it uses less digits than its factorization.

284206666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946696.

The product of its (nonzero) digits is 165888, while the sum is 40.

The square root of 284206666 is about 16858.4301167102. The cubic root of 284206666 is about 657.4732482959.

The spelling of 284206666 in words is "two hundred eighty-four million, two hundred six thousand, six hundred sixty-six".