33684481 has 2 divisors, whose sum is σ = 33684482. Its totient is φ = 33684480.

The previous prime is 33684479. The next prime is 33684491. The reversal of 33684481 is 18448633.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33166081 + 518400 = 5759^2 + 720^2 .

It is a cyclic number.

It is not a de Polignac number, because 33684481 - 2¹ = 33684479 is a prime.

It is a super-2 number, since 2×33684481² = 2269288520478722, which contains 22 as substring.

Together with 33684479, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 33684481.

It is not a weakly prime, because it can be changed into another prime (33684491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16842240 + 16842241.

It is an arithmetic number, because the mean of its divisors is an integer number (16842241).

Almost surely, 2^33684481 is an apocalyptic number.

It is an amenable number.

33684481 is a deficient number, since it is larger than the sum of its proper divisors (1).

33684481 is an equidigital number, since it uses as much as digits as its factorization.

33684481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 37.

The square root of 33684481 is about 5803.8333022236. The cubic root of 33684481 is about 322.9559474343.

The spelling of 33684481 in words is "thirty-three million, six hundred eighty-four thousand, four hundred eighty-one".