33189661 has 8 divisors (see below), whose sum is σ = 35890560. Its totient is φ = 30571968.

The previous prime is 33189557. The next prime is 33189697. The reversal of 33189661 is 16698133.

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

It is a cyclic number.

It is not a de Polignac number, because 33189661 - 2¹¹ = 33187613 is a prime.

It is a super-2 number, since 2×33189661² = 2203107194589842, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33189661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33189061) 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 7 ways as a sum of consecutive naturals, for example, 19971 + ... + 21568.

It is an arithmetic number, because the mean of its divisors is an integer number (4486320).

Almost surely, 2^33189661 is an apocalyptic number.

It is an amenable number.

33189661 is a deficient number, since it is larger than the sum of its proper divisors (2700899).

33189661 is a wasteful number, since it uses less digits than its factorization.

33189661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41603.

The product of its digits is 23328, while the sum is 37.

The square root of 33189661 is about 5761.0468666728. The cubic root of 33189661 is about 321.3667485849.

The spelling of 33189661 in words is "thirty-three million, one hundred eighty-nine thousand, six hundred sixty-one".