206020173 has 24 divisors (see below), whose sum is σ = 291791136. Its totient is φ = 129276000.

The previous prime is 206020159. The next prime is 206020183. The reversal of 206020173 is 371020602.

It is a happy number.

It is not a de Polignac number, because 206020173 - 2¹² = 206016077 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206020183) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195498 + ... + 196548.

It is an arithmetic number, because the mean of its divisors is an integer number (12157964).

Almost surely, 2^206020173 is an apocalyptic number.

It is an amenable number.

206020173 is a deficient number, since it is larger than the sum of its proper divisors (85770963).

206020173 is a wasteful number, since it uses less digits than its factorization.

206020173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273 (or 1254 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 206020173 is about 14353.4028369582. The cubic root of 206020173 is about 590.6133361376.

Adding to 206020173 its reverse (371020602), we get a palindrome (577040775).

The spelling of 206020173 in words is "two hundred six million, twenty thousand, one hundred seventy-three".