206486281 has 16 divisors (see below), whose sum is σ = 222475840. Its totient is φ = 191056320.

The previous prime is 206486279. The next prime is 206486299. The reversal of 206486281 is 182684602.

206486281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a 3-Lehmer number, since φ(206486281) divides (206486281-1)³.

It is a cyclic number.

It is not a de Polignac number, because 206486281 - 2¹ = 206486279 is a prime.

It is a super-2 number, since 2×206486281² = 85273168482421922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 206486281.

It is not an unprimeable number, because it can be changed into a prime (206486081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188371 + ... + 189463.

It is an arithmetic number, because the mean of its divisors is an integer number (13904740).

Almost surely, 2^206486281 is an apocalyptic number.

It is an amenable number.

206486281 is a deficient number, since it is larger than the sum of its proper divisors (15989559).

206486281 is a wasteful number, since it uses less digits than its factorization.

206486281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336.

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 206486281 is about 14369.6305102115. The cubic root of 206486281 is about 591.0584094668.

The spelling of 206486281 in words is "two hundred six million, four hundred eighty-six thousand, two hundred eighty-one".