33730861 has 2 divisors, whose sum is σ = 33730862. Its totient is φ = 33730860.

The previous prime is 33730859. The next prime is 33730901. The reversal of 33730861 is 16803733.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25857225 + 7873636 = 5085^2 + 2806^2 .

It is a cyclic number.

It is not a de Polignac number, because 33730861 - 2¹ = 33730859 is a prime.

It is a super-2 number, since 2×33730861² = 2275541967602642, which contains 22 as substring.

Together with 33730859, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33730841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16865430 + 16865431.

It is an arithmetic number, because the mean of its divisors is an integer number (16865431).

Almost surely, 2^33730861 is an apocalyptic number.

It is an amenable number.

33730861 is a deficient number, since it is larger than the sum of its proper divisors (1).

33730861 is an equidigital number, since it uses as much as digits as its factorization.

33730861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 33730861 is about 5807.8275628672. The cubic root of 33730861 is about 323.1041049533.

The spelling of 33730861 in words is "thirty-three million, seven hundred thirty thousand, eight hundred sixty-one".