33764281 has 2 divisors, whose sum is σ = 33764282. Its totient is φ = 33764280.

The previous prime is 33764267. The next prime is 33764359. The reversal of 33764281 is 18246733.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28515600 + 5248681 = 5340^2 + 2291^2 .

It is a cyclic number.

It is not a de Polignac number, because 33764281 - 2⁷ = 33764153 is a prime.

It is a super-2 number, since 2×33764281² = 2280053342893922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33764221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16882140 + 16882141.

It is an arithmetic number, because the mean of its divisors is an integer number (16882141).

Almost surely, 2^33764281 is an apocalyptic number.

It is an amenable number.

33764281 is a deficient number, since it is larger than the sum of its proper divisors (1).

33764281 is an equidigital number, since it uses as much as digits as its factorization.

33764281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 34.

The square root of 33764281 is about 5810.7040020982. The cubic root of 33764281 is about 323.2107785317.

The spelling of 33764281 in words is "thirty-three million, seven hundred sixty-four thousand, two hundred eighty-one".