205369601 has 2 divisors, whose sum is σ = 205369602. Its totient is φ = 205369600.

The previous prime is 205369589. The next prime is 205369607. The reversal of 205369601 is 106963502.

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., 132250000 + 73119601 = 11500^2 + 8551^2 .

It is a cyclic number.

It is not a de Polignac number, because 205369601 - 2¹⁰ = 205368577 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (205369607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102684800 + 102684801.

It is an arithmetic number, because the mean of its divisors is an integer number (102684801).

Almost surely, 2^205369601 is an apocalyptic number.

It is an amenable number.

205369601 is a deficient number, since it is larger than the sum of its proper divisors (1).

205369601 is an equidigital number, since it uses as much as digits as its factorization.

205369601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 205369601 is about 14330.7222776802. The cubic root of 205369601 is about 589.9909995754.

The spelling of 205369601 in words is "two hundred five million, three hundred sixty-nine thousand, six hundred one".