206536855 has 16 divisors (see below), whose sum is σ = 284316480. Its totient is φ = 141092352.

The previous prime is 206536843. The next prime is 206536861. The reversal of 206536855 is 558635602.

It is a cyclic number.

It is not a de Polignac number, because 206536855 - 2¹⁵ = 206504087 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1554 + ... + 20383.

It is an arithmetic number, because the mean of its divisors is an integer number (17769780).

Almost surely, 2^206536855 is an apocalyptic number.

206536855 is a deficient number, since it is larger than the sum of its proper divisors (77779625).

206536855 is a wasteful number, since it uses less digits than its factorization.

206536855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22218.

The product of its (nonzero) digits is 216000, while the sum is 40.

The square root of 206536855 is about 14371.3901554443. The cubic root of 206536855 is about 591.1066608530.

The spelling of 206536855 in words is "two hundred six million, five hundred thirty-six thousand, eight hundred fifty-five".