206615133 has 12 divisors (see below), whose sum is σ = 299946400. Its totient is φ = 137050056.

The previous prime is 206615117. The next prime is 206615153. The reversal of 206615133 is 331516602.

It is not a de Polignac number, because 206615133 - 2⁴ = 206615117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206615097 and 206615106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206615153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55891 + ... + 59472.

Almost surely, 2^206615133 is an apocalyptic number.

It is an amenable number.

206615133 is a deficient number, since it is larger than the sum of its proper divisors (93331267).

206615133 is a wasteful number, since it uses less digits than its factorization.

206615133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115568 (or 115565 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 206615133 is about 14374.1132943914. The cubic root of 206615133 is about 591.1813284030.

The spelling of 206615133 in words is "two hundred six million, six hundred fifteen thousand, one hundred thirty-three".