33749761 has 2 divisors, whose sum is σ = 33749762. Its totient is φ = 33749760.

The previous prime is 33749747. The next prime is 33749767. The reversal of 33749761 is 16794733.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30305025 + 3444736 = 5505^2 + 1856^2 .

It is an emirp because it is prime and its reverse (16794733) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33749761 - 2⁷ = 33749633 is a prime.

It is a super-2 number, since 2×33749761² = 2278092735114242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33749767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16874880 + 16874881.

It is an arithmetic number, because the mean of its divisors is an integer number (16874881).

Almost surely, 2^33749761 is an apocalyptic number.

It is an amenable number.

33749761 is a deficient number, since it is larger than the sum of its proper divisors (1).

33749761 is an equidigital number, since it uses as much as digits as its factorization.

33749761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 95256, while the sum is 40.

The square root of 33749761 is about 5809.4544494298. The cubic root of 33749761 is about 323.1644406735.

The spelling of 33749761 in words is "thirty-three million, seven hundred forty-nine thousand, seven hundred sixty-one".