205274887 has 2 divisors, whose sum is σ = 205274888. Its totient is φ = 205274886.

The previous prime is 205274869. The next prime is 205274903. The reversal of 205274887 is 788472502.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205274887 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205274807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102637443 + 102637444.

It is an arithmetic number, because the mean of its divisors is an integer number (102637444).

Almost surely, 2^205274887 is an apocalyptic number.

205274887 is a deficient number, since it is larger than the sum of its proper divisors (1).

205274887 is an equidigital number, since it uses as much as digits as its factorization.

205274887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 250880, while the sum is 43.

The square root of 205274887 is about 14327.4173178560. The cubic root of 205274887 is about 589.9002867015.

The spelling of 205274887 in words is "two hundred five million, two hundred seventy-four thousand, eight hundred eighty-seven".