206878241 has 2 divisors, whose sum is σ = 206878242. Its totient is φ = 206878240.

The previous prime is 206878237. The next prime is 206878271. The reversal of 206878241 is 142878602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203347600 + 3530641 = 14260^2 + 1879^2 .

It is a cyclic number.

It is not a de Polignac number, because 206878241 - 2² = 206878237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 206878195 and 206878204.

It is not a weakly prime, because it can be changed into another prime (206878201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103439120 + 103439121.

It is an arithmetic number, because the mean of its divisors is an integer number (103439121).

Almost surely, 2^206878241 is an apocalyptic number.

It is an amenable number.

206878241 is a deficient number, since it is larger than the sum of its proper divisors (1).

206878241 is an equidigital number, since it uses as much as digits as its factorization.

206878241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 206878241 is about 14383.2625297601. The cubic root of 206878241 is about 591.4321628197.

The spelling of 206878241 in words is "two hundred six million, eight hundred seventy-eight thousand, two hundred forty-one".