205970641 has 2 divisors, whose sum is σ = 205970642. Its totient is φ = 205970640.

The previous prime is 205970629. The next prime is 205970671. The reversal of 205970641 is 146079502.

205970641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158760000 + 47210641 = 12600^2 + 6871^2 .

It is a cyclic number.

It is not a de Polignac number, because 205970641 - 2¹⁵ = 205937873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205970597 and 205970606.

It is not a weakly prime, because it can be changed into another prime (205970671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102985320 + 102985321.

It is an arithmetic number, because the mean of its divisors is an integer number (102985321).

Almost surely, 2^205970641 is an apocalyptic number.

It is an amenable number.

205970641 is a deficient number, since it is larger than the sum of its proper divisors (1).

205970641 is an equidigital number, since it uses as much as digits as its factorization.

205970641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 205970641 is about 14351.6772887353. The cubic root of 205970641 is about 590.5659999891.

The spelling of 205970641 in words is "two hundred five million, nine hundred seventy thousand, six hundred forty-one".