205666227 has 24 divisors (see below), whose sum is σ = 321585264. Its totient is φ = 125907264.

The previous prime is 205666217. The next prime is 205666229. The reversal of 205666227 is 722666502.

205666227 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 205666227 - 2⁶ = 205666163 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 205666191 and 205666200.

It is not an unprimeable number, because it can be changed into a prime (205666229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18588 + ... + 27510.

It is an arithmetic number, because the mean of its divisors is an integer number (13399386).

Almost surely, 2^205666227 is an apocalyptic number.

205666227 is a deficient number, since it is larger than the sum of its proper divisors (115919037).

205666227 is a wasteful number, since it uses less digits than its factorization.

205666227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9139 (or 9136 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 205666227 is about 14341.0678472700. The cubic root of 205666227 is about 590.2749144941.

The spelling of 205666227 in words is "two hundred five million, six hundred sixty-six thousand, two hundred twenty-seven".