213333866 has 8 divisors (see below), whose sum is σ = 320317284. Its totient is φ = 106561440.

The previous prime is 213333863. The next prime is 213333899. The reversal of 213333866 is 668333312.

It can be written as a sum of positive squares in 2 ways, for example, as 181467841 + 31866025 = 13471^2 + 5645^2 .

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

It is a super-2 number, since 2×213333866² = 91022676765011912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213333863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50195 + ... + 54278.

Almost surely, 2^213333866 is an apocalyptic number.

213333866 is a deficient number, since it is larger than the sum of its proper divisors (106983418).

213333866 is a wasteful number, since it uses less digits than its factorization.

213333866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105496.

The product of its digits is 46656, while the sum is 35.

The square root of 213333866 is about 14605.9531013899. The cubic root of 213333866 is about 597.5211301853.

The spelling of 213333866 in words is "two hundred thirteen million, three hundred thirty-three thousand, eight hundred sixty-six".