33066881 has 4 divisors (see below), whose sum is σ = 33121092. Its totient is φ = 33012672.

The previous prime is 33066877. The next prime is 33066899. The reversal of 33066881 is 18866033.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6451600 + 26615281 = 2540^2 + 5159^2 .

It is a cyclic number.

It is not a de Polignac number, because 33066881 - 2² = 33066877 is a prime.

It is a super-2 number, since 2×33066881² = 2186837238136322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33066281) 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 3 ways as a sum of consecutive naturals, for example, 26180 + ... + 27413.

It is an arithmetic number, because the mean of its divisors is an integer number (8280273).

Almost surely, 2^33066881 is an apocalyptic number.

It is an amenable number.

33066881 is a deficient number, since it is larger than the sum of its proper divisors (54211).

33066881 is an equidigital number, since it uses as much as digits as its factorization.

33066881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54210.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 33066881 is about 5750.3809439028. The cubic root of 33066881 is about 320.9699767794.

The spelling of 33066881 in words is "thirty-three million, sixty-six thousand, eight hundred eighty-one".