206401205 has 16 divisors (see below), whose sum is σ = 256746240. Its totient is φ = 159183552.

The previous prime is 206401187. The next prime is 206401211. The reversal of 206401205 is 502104602.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 206401205 - 2²⁴ = 189623989 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9191 + ... + 22299.

It is an arithmetic number, because the mean of its divisors is an integer number (16046640).

Almost surely, 2^206401205 is an apocalyptic number.

It is an amenable number.

206401205 is a deficient number, since it is larger than the sum of its proper divisors (50345035).

206401205 is a wasteful number, since it uses less digits than its factorization.

206401205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13228.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 206401205 is about 14366.6699342610. The cubic root of 206401205 is about 590.9772228093.

Adding to 206401205 its reverse (502104602), we get a palindrome (708505807).

The spelling of 206401205 in words is "two hundred six million, four hundred one thousand, two hundred five".