206340255 has 24 divisors (see below), whose sum is σ = 390171600. Its totient is φ = 100043520.

The previous prime is 206340227. The next prime is 206340263. The reversal of 206340255 is 552043602.

206340255 is a `hidden beast` number, since 2 + 0 + 634 + 0 + 25 + 5 = 666.

It is not a de Polignac number, because 206340255 - 2⁵ = 206340223 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 207930 + ... + 208919.

It is an arithmetic number, because the mean of its divisors is an integer number (16257150).

Almost surely, 2^206340255 is an apocalyptic number.

206340255 is a deficient number, since it is larger than the sum of its proper divisors (183831345).

206340255 is a wasteful number, since it uses less digits than its factorization.

206340255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416871 (or 416868 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 206340255 is about 14364.5485484230. The cubic root of 206340255 is about 590.9190454877.

Adding to 206340255 its reverse (552043602), we get a palindrome (758383857).

The spelling of 206340255 in words is "two hundred six million, three hundred forty thousand, two hundred fifty-five".