206906885 has 8 divisors (see below), whose sum is σ = 248864280. Its totient is φ = 165141504.

The previous prime is 206906837. The next prime is 206906891. The reversal of 206906885 is 588609602.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14002564 + 192904321 = 3742^2 + 13889^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206906885 is a prime.

It is a super-3 number, since 3×206906885³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45620 + ... + 49949.

It is an arithmetic number, because the mean of its divisors is an integer number (31108035).

Almost surely, 2^206906885 is an apocalyptic number.

It is an amenable number.

206906885 is a deficient number, since it is larger than the sum of its proper divisors (41957395).

206906885 is an equidigital number, since it uses as much as digits as its factorization.

206906885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96007.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 206906885 is about 14384.2582360023. The cubic root of 206906885 is about 591.4594577815.

The spelling of 206906885 in words is "two hundred six million, nine hundred six thousand, eight hundred eighty-five".