33996661 has 2 divisors, whose sum is σ = 33996662. Its totient is φ = 33996660.

The previous prime is 33996649. The next prime is 33996689. The reversal of 33996661 is 16669933.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32421636 + 1575025 = 5694^2 + 1255^2 .

It is a cyclic number.

It is not a de Polignac number, because 33996661 - 2⁷ = 33996533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33996601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16998330 + 16998331.

It is an arithmetic number, because the mean of its divisors is an integer number (16998331).

Almost surely, 2^33996661 is an apocalyptic number.

It is an amenable number.

33996661 is a deficient number, since it is larger than the sum of its proper divisors (1).

33996661 is an equidigital number, since it uses as much as digits as its factorization.

33996661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 157464, while the sum is 43.

The square root of 33996661 is about 5830.6655709276. The cubic root of 33996661 is about 323.9505748161.

The spelling of 33996661 in words is "thirty-three million, nine hundred ninety-six thousand, six hundred sixty-one".