206394085 has 8 divisors (see below), whose sum is σ = 248568696. Its totient is φ = 164518080.

The previous prime is 206394077. The next prime is 206394091. The reversal of 206394085 is 580493602.

206394085 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 51466276 + 154927809 = 7174^2 + 12447^2 .

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

It is not a de Polignac number, because 206394085 - 2³ = 206394077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73126 + ... + 75895.

It is an arithmetic number, because the mean of its divisors is an integer number (31071087).

Almost surely, 2^206394085 is an apocalyptic number.

It is an amenable number.

206394085 is a deficient number, since it is larger than the sum of its proper divisors (42174611).

206394085 is a wasteful number, since it uses less digits than its factorization.

206394085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149303.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 206394085 is about 14366.4221363567. The cubic root of 206394085 is about 590.9704272963.

The spelling of 206394085 in words is "two hundred six million, three hundred ninety-four thousand, eighty-five".