33136661 has 2 divisors, whose sum is σ = 33136662. Its totient is φ = 33136660.

The previous prime is 33136657. The next prime is 33136667. The reversal of 33136661 is 16663133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24196561 + 8940100 = 4919^2 + 2990^2 .

It is a cyclic number.

It is not a de Polignac number, because 33136661 - 2² = 33136657 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33136667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16568330 + 16568331.

It is an arithmetic number, because the mean of its divisors is an integer number (16568331).

Almost surely, 2^33136661 is an apocalyptic number.

It is an amenable number.

33136661 is a deficient number, since it is larger than the sum of its proper divisors (1).

33136661 is an equidigital number, since it uses as much as digits as its factorization.

33136661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 29.

The square root of 33136661 is about 5756.4451704155. The cubic root of 33136661 is about 321.1955957672.

Adding to 33136661 its reverse (16663133), we get a palindrome (49799794).

The spelling of 33136661 in words is "thirty-three million, one hundred thirty-six thousand, six hundred sixty-one".