33349661 has 2 divisors, whose sum is σ = 33349662. Its totient is φ = 33349660.

The previous prime is 33349633. The next prime is 33349663. The reversal of 33349661 is 16694333.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26327161 + 7022500 = 5131^2 + 2650^2 .

It is an emirp because it is prime and its reverse (16694333) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33349661 - 2¹⁸ = 33087517 is a prime.

It is a super-2 number, since 2×33349661² = 2224399777629842, which contains 22 as substring.

Together with 33349663, 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 (33349663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16674830 + 16674831.

It is an arithmetic number, because the mean of its divisors is an integer number (16674831).

Almost surely, 2^33349661 is an apocalyptic number.

It is an amenable number.

33349661 is a deficient number, since it is larger than the sum of its proper divisors (1).

33349661 is an equidigital number, since it uses as much as digits as its factorization.

33349661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 35.

The square root of 33349661 is about 5774.9165361934. The cubic root of 33349661 is about 321.8823335873.

It can be divided in two parts, 333 and 49661, that added together give a palindrome (49994).

The spelling of 33349661 in words is "thirty-three million, three hundred forty-nine thousand, six hundred sixty-one".