206062561 has 2 divisors, whose sum is σ = 206062562. Its totient is φ = 206062560.

The previous prime is 206062547. The next prime is 206062567. The reversal of 206062561 is 165260602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142062561 + 64000000 = 11919^2 + 8000^2 .

It is a cyclic number.

It is not a de Polignac number, because 206062561 - 2¹¹ = 206060513 is a prime.

It is not a weakly prime, because it can be changed into another prime (206062567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103031280 + 103031281.

It is an arithmetic number, because the mean of its divisors is an integer number (103031281).

Almost surely, 2^206062561 is an apocalyptic number.

It is an amenable number.

206062561 is a deficient number, since it is larger than the sum of its proper divisors (1).

206062561 is an equidigital number, since it uses as much as digits as its factorization.

206062561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 206062561 is about 14354.8793446688. The cubic root of 206062561 is about 590.6538389696.

The spelling of 206062561 in words is "two hundred six million, sixty-two thousand, five hundred sixty-one".