338006666 has 12 divisors (see below), whose sum is σ = 530014002. Its totient is φ = 161654856.

The previous prime is 338006663. The next prime is 338006681. The reversal of 338006666 is 666600833.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 242456041 + 95550625 = 15571^2 + 9775^2 .

It is a super-2 number, since 2×338006666² = 228497012520871112, which contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (338006663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 158681 + ... + 160796.

Almost surely, 2^338006666 is an apocalyptic number.

338006666 is a deficient number, since it is larger than the sum of its proper divisors (192007336).

338006666 is a wasteful number, since it uses less digits than its factorization.

338006666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319525 (or 319502 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 38.

The square root of 338006666 is about 18384.9576012565. The cubic root of 338006666 is about 696.5865560633.

The spelling of 338006666 in words is "three hundred thirty-eight million, six thousand, six hundred sixty-six".