206305953 has 16 divisors (see below), whose sum is σ = 315012096. Its totient is φ = 117648720.

The previous prime is 206305943. The next prime is 206306017. The reversal of 206305953 is 359503602.

It is not a de Polignac number, because 206305953 - 2⁴ = 206305937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206305903) 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, 798 + ... + 20328.

It is an arithmetic number, because the mean of its divisors is an integer number (19688256).

Almost surely, 2^206305953 is an apocalyptic number.

It is an amenable number.

206305953 is a deficient number, since it is larger than the sum of its proper divisors (108706143).

206305953 is a wasteful number, since it uses less digits than its factorization.

206305953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20044.

The product of its (nonzero) digits is 24300, while the sum is 33.

The square root of 206305953 is about 14363.3545176606. The cubic root of 206305953 is about 590.8862988828.

The spelling of 206305953 in words is "two hundred six million, three hundred five thousand, nine hundred fifty-three".