33328861 has 2 divisors, whose sum is σ = 33328862. Its totient is φ = 33328860.

The previous prime is 33328853. The next prime is 33328873. The reversal of 33328861 is 16882333.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33235225 + 93636 = 5765^2 + 306^2 .

It is a cyclic number.

It is not a de Polignac number, because 33328861 - 2³ = 33328853 is a prime.

It is a super-2 number, since 2×33328861² = 2221625951114642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33328961) 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 as a sum of consecutive naturals, namely, 16664430 + 16664431.

It is an arithmetic number, because the mean of its divisors is an integer number (16664431).

Almost surely, 2^33328861 is an apocalyptic number.

It is an amenable number.

33328861 is a deficient number, since it is larger than the sum of its proper divisors (1).

33328861 is an equidigital number, since it uses as much as digits as its factorization.

33328861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The square root of 33328861 is about 5773.1153634758. The cubic root of 33328861 is about 321.8154009236.

The spelling of 33328861 in words is "thirty-three million, three hundred twenty-eight thousand, eight hundred sixty-one".