206887441 has 2 divisors, whose sum is σ = 206887442. Its totient is φ = 206887440.

The previous prime is 206887427. The next prime is 206887451. The reversal of 206887441 is 144788602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 206784400 + 103041 = 14380^2 + 321^2 .

It is a cyclic number.

It is not a de Polignac number, because 206887441 - 2¹³ = 206879249 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 206887394 and 206887403.

It is not a weakly prime, because it can be changed into another prime (206887451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103443720 + 103443721.

It is an arithmetic number, because the mean of its divisors is an integer number (103443721).

Almost surely, 2^206887441 is an apocalyptic number.

It is an amenable number.

206887441 is a deficient number, since it is larger than the sum of its proper divisors (1).

206887441 is an equidigital number, since it uses as much as digits as its factorization.

206887441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 206887441 is about 14383.5823423791. The cubic root of 206887441 is about 591.4409298046.

The spelling of 206887441 in words is "two hundred six million, eight hundred eighty-seven thousand, four hundred forty-one".