33688489 has 2 divisors, whose sum is σ = 33688490. Its totient is φ = 33688488.

The previous prime is 33688483. The next prime is 33688507. The reversal of 33688489 is 98488633.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31270464 + 2418025 = 5592^2 + 1555^2 .

It is a cyclic number.

It is not a de Polignac number, because 33688489 - 2³ = 33688481 is a prime.

It is a super-2 number, since 2×33688489² = 2269828582206242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33688481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16844244 + 16844245.

It is an arithmetic number, because the mean of its divisors is an integer number (16844245).

Almost surely, 2^33688489 is an apocalyptic number.

It is an amenable number.

33688489 is a deficient number, since it is larger than the sum of its proper divisors (1).

33688489 is an equidigital number, since it uses as much as digits as its factorization.

33688489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 995328, while the sum is 49.

The square root of 33688489 is about 5804.1785809880. The cubic root of 33688489 is about 322.9687560637.

The spelling of 33688489 in words is "thirty-three million, six hundred eighty-eight thousand, four hundred eighty-nine".