33096781 has 2 divisors, whose sum is σ = 33096782. Its totient is φ = 33096780.

The previous prime is 33096769. The next prime is 33096823. The reversal of 33096781 is 18769033.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32592681 + 504100 = 5709^2 + 710^2 .

It is a cyclic number.

It is not a de Polignac number, because 33096781 - 2⁷ = 33096653 is a prime.

It is a super-2 number, since 2×33096781² = 2190793825123922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 33096781.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33096731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16548390 + 16548391.

It is an arithmetic number, because the mean of its divisors is an integer number (16548391).

Almost surely, 2^33096781 is an apocalyptic number.

It is an amenable number.

33096781 is a deficient number, since it is larger than the sum of its proper divisors (1).

33096781 is an equidigital number, since it uses as much as digits as its factorization.

33096781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 33096781 is about 5752.9801842176. The cubic root of 33096781 is about 321.0666909825.

The spelling of 33096781 in words is "thirty-three million, ninety-six thousand, seven hundred eighty-one".