33666666 has 16 divisors (see below), whose sum is σ = 73454688. Its totient is φ = 10202000.

The previous prime is 33666649. The next prime is 33666667. The reversal of 33666666 is 66666633.

It is a super-2 number, since 2×33666666² = 2266888799111112, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

33666666 is a modest number, since divided by 6666 gives 3366 as remainder.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (33666667) 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 7 ways as a sum of consecutive naturals, for example, 254985 + ... + 255116.

It is an arithmetic number, because the mean of its divisors is an integer number (4590918).

Almost surely, 2^33666666 is an apocalyptic number.

33666666 is an abundant number, since it is smaller than the sum of its proper divisors (39788022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33666666 is a wasteful number, since it uses less digits than its factorization.

33666666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510117.

The product of its digits is 419904, while the sum is 42.

The square root of 33666666 is about 5802.2983377279. The cubic root of 33666666 is about 322.8990025680.

It can be divided in two parts, 33666 and 666, that multiplied together give a triangular number (22421556 = T₆₆₉₆).

The spelling of 33666666 in words is "thirty-three million, six hundred sixty-six thousand, six hundred sixty-six".