205066219 has 2 divisors, whose sum is σ = 205066220. Its totient is φ = 205066218.

The previous prime is 205066181. The next prime is 205066237. The reversal of 205066219 is 912660502.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205066219 is a prime.

It is a super-2 number, since 2×205066219² = 84104308349911922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (205066319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102533109 + 102533110.

It is an arithmetic number, because the mean of its divisors is an integer number (102533110).

Almost surely, 2^205066219 is an apocalyptic number.

205066219 is a deficient number, since it is larger than the sum of its proper divisors (1).

205066219 is an equidigital number, since it uses as much as digits as its factorization.

205066219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 205066219 is about 14320.1333443512. The cubic root of 205066219 is about 589.7003352320.

The spelling of 205066219 in words is "two hundred five million, sixty-six thousand, two hundred nineteen".