205343797 has 2 divisors, whose sum is σ = 205343798. Its totient is φ = 205343796.

The previous prime is 205343759. The next prime is 205343819. The reversal of 205343797 is 797343502.

205343797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143784081 + 61559716 = 11991^2 + 7846^2 .

It is a cyclic number.

It is not a de Polignac number, because 205343797 - 2¹⁹ = 204819509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205343707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102671898 + 102671899.

It is an arithmetic number, because the mean of its divisors is an integer number (102671899).

Almost surely, 2^205343797 is an apocalyptic number.

It is an amenable number.

205343797 is a deficient number, since it is larger than the sum of its proper divisors (1).

205343797 is an equidigital number, since it uses as much as digits as its factorization.

205343797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158760, while the sum is 40.

The square root of 205343797 is about 14329.8219458582. The cubic root of 205343797 is about 589.9662884118.

The spelling of 205343797 in words is "two hundred five million, three hundred forty-three thousand, seven hundred ninety-seven".