206868413 has 2 divisors, whose sum is σ = 206868414. Its totient is φ = 206868412.

The previous prime is 206868379. The next prime is 206868419. The reversal of 206868413 is 314868602.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199459129 + 7409284 = 14123^2 + 2722^2 .

It is a cyclic number.

It is not a de Polignac number, because 206868413 - 2¹⁶ = 206802877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206868419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103434206 + 103434207.

It is an arithmetic number, because the mean of its divisors is an integer number (103434207).

Almost surely, 2^206868413 is an apocalyptic number.

It is an amenable number.

206868413 is a deficient number, since it is larger than the sum of its proper divisors (1).

206868413 is an equidigital number, since it uses as much as digits as its factorization.

206868413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 206868413 is about 14382.9208785976. The cubic root of 206868413 is about 591.4227971056.

The spelling of 206868413 in words is "two hundred six million, eight hundred sixty-eight thousand, four hundred thirteen".