206709213 has 8 divisors (see below), whose sum is σ = 282022048. Its totient is φ = 134601264.

The previous prime is 206709203. The next prime is 206709229. The reversal of 206709213 is 312907602.

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

It is not a de Polignac number, because 206709213 - 2⁹ = 206708701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206709203) 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 7 ways as a sum of consecutive naturals, for example, 801070 + ... + 801327.

It is an arithmetic number, because the mean of its divisors is an integer number (35252756).

Almost surely, 2^206709213 is an apocalyptic number.

It is an amenable number.

206709213 is a deficient number, since it is larger than the sum of its proper divisors (75312835).

206709213 is a wasteful number, since it uses less digits than its factorization.

206709213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602443.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 206709213 is about 14377.3854716357. The cubic root of 206709213 is about 591.2710441610.

The spelling of 206709213 in words is "two hundred six million, seven hundred nine thousand, two hundred thirteen".