33668216 has 16 divisors (see below), whose sum is σ = 64668240. Its totient is φ = 16423360.

The previous prime is 33668147. The next prime is 33668233. The reversal of 33668216 is 61286633.

It is a super-2 number, since 2×33668216² = 2267097537245312, which contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 50996 + ... + 51651.

It is an arithmetic number, because the mean of its divisors is an integer number (4041765).

Almost surely, 2^33668216 is an apocalyptic number.

It is an amenable number.

33668216 is a deficient number, since it is larger than the sum of its proper divisors (31000024).

33668216 is a wasteful number, since it uses less digits than its factorization.

33668216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102694 (or 102690 counting only the distinct ones).

The product of its digits is 31104, while the sum is 35.

The square root of 33668216 is about 5802.4319039520. The cubic root of 33668216 is about 322.9039578728.

The spelling of 33668216 in words is "thirty-three million, six hundred sixty-eight thousand, two hundred sixteen".