206820033 has 12 divisors (see below), whose sum is σ = 320782320. Its totient is φ = 118182792.

The previous prime is 206820013. The next prime is 206820043. The reversal of 206820033 is 330028602.

It is not a de Polignac number, because 206820033 - 2⁶ = 206819969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 206819985 and 206820012.

It is not an unprimeable number, because it can be changed into a prime (206820013) 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, 703323 + ... + 703616.

It is an arithmetic number, because the mean of its divisors is an integer number (26731860).

Almost surely, 2^206820033 is an apocalyptic number.

It is an amenable number.

206820033 is a deficient number, since it is larger than the sum of its proper divisors (113962287).

206820033 is a wasteful number, since it uses less digits than its factorization.

206820033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406956 (or 1406949 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 206820033 is about 14381.2389243764. The cubic root of 206820033 is about 591.3766884620.

Adding to 206820033 its reverse (330028602), we get a palindrome (536848635).

The spelling of 206820033 in words is "two hundred six million, eight hundred twenty thousand, thirty-three".