206516839 has 6 divisors (see below), whose sum is σ = 215886776. Its totient is φ = 197537340.

The previous prime is 206516813. The next prime is 206516851. The reversal of 206516839 is 938615602.

It is not a de Polignac number, because 206516839 - 2⁷ = 206516711 is a prime.

It is a super-3 number, since 3×206516839³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206516809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 194667 + ... + 195724.

Almost surely, 2^206516839 is an apocalyptic number.

206516839 is a deficient number, since it is larger than the sum of its proper divisors (9369937).

206516839 is an equidigital number, since it uses as much as digits as its factorization.

206516839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390437 (or 390414 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 206516839 is about 14370.6937550001. The cubic root of 206516839 is about 591.0875650308.

The spelling of 206516839 in words is "two hundred six million, five hundred sixteen thousand, eight hundred thirty-nine".