206211485 has 4 divisors (see below), whose sum is σ = 247453788. Its totient is φ = 164969184.

The previous prime is 206211469. The next prime is 206211497. The reversal of 206211485 is 584112602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 154902916 + 51308569 = 12446^2 + 7163^2 .

It is a cyclic number.

It is not a de Polignac number, because 206211485 - 2⁴ = 206211469 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 20621144 + ... + 20621153.

It is an arithmetic number, because the mean of its divisors is an integer number (61863447).

Almost surely, 2^206211485 is an apocalyptic number.

It is an amenable number.

206211485 is a deficient number, since it is larger than the sum of its proper divisors (41242303).

206211485 is an equidigital number, since it uses as much as digits as its factorization.

206211485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41242302.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 206211485 is about 14360.0656335547. The cubic root of 206211485 is about 590.7960956866.

The spelling of 206211485 in words is "two hundred six million, two hundred eleven thousand, four hundred eighty-five".