33666668 has 24 divisors (see below), whose sum is σ = 67563552. Its totient is φ = 14379264.

The previous prime is 33666667. The next prime is 33666673. The reversal of 33666668 is 86666633.

It is a happy number.

It is a super-2 number, since 2×33666668² = 2266889068444448, which contains 22 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a plaindrome 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, 6980 + ... + 10772.

It is an arithmetic number, because the mean of its divisors is an integer number (2815148).

Almost surely, 2^33666668 is an apocalyptic number.

It is an amenable number.

33666668 is an abundant number, since it is smaller than the sum of its proper divisors (33896884).

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

33666668 is a wasteful number, since it uses less digits than its factorization.

33666668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4121 (or 4119 counting only the distinct ones).

The product of its digits is 559872, while the sum is 44.

The square root of 33666668 is about 5802.2985100734. The cubic root of 33666668 is about 322.8990089621.

The spelling of 33666668 in words is "thirty-three million, six hundred sixty-six thousand, six hundred sixty-eight".