206313717 has 32 divisors (see below), whose sum is σ = 297851904. Its totient is φ = 126560000.

The previous prime is 206313697. The next prime is 206313721. The reversal of 206313717 is 717313602.

It is a cyclic number.

It is not a de Polignac number, because 206313717 - 2²⁶ = 139204853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206313727) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 821842 + ... + 822092.

It is an arithmetic number, because the mean of its divisors is an integer number (9307872).

Almost surely, 2^206313717 is an apocalyptic number.

It is an amenable number.

206313717 is a deficient number, since it is larger than the sum of its proper divisors (91538187).

206313717 is a wasteful number, since it uses less digits than its factorization.

206313717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 206313717 is about 14363.6247862439. The cubic root of 206313717 is about 590.8937111486.

The spelling of 206313717 in words is "two hundred six million, three hundred thirteen thousand, seven hundred seventeen".