338624666 has 16 divisors (see below), whose sum is σ = 552353256. Its totient is φ = 155045376.

The previous prime is 338624647. The next prime is 338624729. The reversal of 338624666 is 666426833.

It can be written as a sum of positive squares in 4 ways, for example, as 319658641 + 18966025 = 17879^2 + 4355^2 .

It is a super-2 number, since 2×338624666² = 229333328847223112, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 133331 + ... + 135846.

Almost surely, 2^338624666 is an apocalyptic number.

338624666 is a deficient number, since it is larger than the sum of its proper divisors (213728590).

338624666 is a wasteful number, since it uses less digits than its factorization.

338624666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269233.

The product of its digits is 746496, while the sum is 44.

The square root of 338624666 is about 18401.7571443599. The cubic root of 338624666 is about 697.0108360518.

The spelling of 338624666 in words is "three hundred thirty-eight million, six hundred twenty-four thousand, six hundred sixty-six".