206081773 has 4 divisors (see below), whose sum is σ = 206238400. Its totient is φ = 205925148.

The previous prime is 206081761. The next prime is 206081789. The reversal of 206081773 is 377180602.

206081773 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206081773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206001773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76323 + ... + 78976.

It is an arithmetic number, because the mean of its divisors is an integer number (51559600).

Almost surely, 2^206081773 is an apocalyptic number.

It is an amenable number.

206081773 is a deficient number, since it is larger than the sum of its proper divisors (156627).

206081773 is a wasteful number, since it uses less digits than its factorization.

206081773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156626.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 206081773 is about 14355.5485092002. The cubic root of 206081773 is about 590.6721947040.

The spelling of 206081773 in words is "two hundred six million, eighty-one thousand, seven hundred seventy-three".