205764983 has 2 divisors, whose sum is σ = 205764984. Its totient is φ = 205764982.

The previous prime is 205764967. The next prime is 205764997. The reversal of 205764983 is 389467502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205764983 - 2⁴ = 205764967 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205764913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102882491 + 102882492.

It is an arithmetic number, because the mean of its divisors is an integer number (102882492).

Almost surely, 2^205764983 is an apocalyptic number.

205764983 is a deficient number, since it is larger than the sum of its proper divisors (1).

205764983 is an equidigital number, since it uses as much as digits as its factorization.

205764983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 205764983 is about 14344.5105528212. The cubic root of 205764983 is about 590.3693780050.

The spelling of 205764983 in words is "two hundred five million, seven hundred sixty-four thousand, nine hundred eighty-three".