33663994 has 16 divisors (see below), whose sum is σ = 62149248. Its totient is φ = 13317552.

The previous prime is 33663989. The next prime is 33663997. The reversal of 33663994 is 49936633.

33663994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×33663994² = 2266528984064072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33663994.

It is not an unprimeable number, because it can be changed into a prime (33663997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92302 + ... + 92665.

It is an arithmetic number, because the mean of its divisors is an integer number (3884328).

Almost surely, 2^33663994 is an apocalyptic number.

33663994 is a deficient number, since it is larger than the sum of its proper divisors (28485254).

33663994 is a wasteful number, since it uses less digits than its factorization.

33663994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184989.

The product of its digits is 314928, while the sum is 43.

The square root of 33663994 is about 5802.0680795730. The cubic root of 33663994 is about 322.8904599049.

The spelling of 33663994 in words is "thirty-three million, six hundred sixty-three thousand, nine hundred ninety-four".