206608013 has 2 divisors, whose sum is σ = 206608014. Its totient is φ = 206608012.

The previous prime is 206608007. The next prime is 206608027. The reversal of 206608013 is 310806602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159314884 + 47293129 = 12622^2 + 6877^2 .

It is a cyclic number.

It is not a de Polignac number, because 206608013 - 2⁴ = 206607997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206608043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103304006 + 103304007.

It is an arithmetic number, because the mean of its divisors is an integer number (103304007).

Almost surely, 2^206608013 is an apocalyptic number.

It is an amenable number.

206608013 is a deficient number, since it is larger than the sum of its proper divisors (1).

206608013 is an equidigital number, since it uses as much as digits as its factorization.

206608013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 206608013 is about 14373.8656248067. The cubic root of 206608013 is about 591.1745375816.

The spelling of 206608013 in words is "two hundred six million, six hundred eight thousand, thirteen".