205650066 has 8 divisors (see below), whose sum is σ = 411300144. Its totient is φ = 68550020.

The previous prime is 205650059. The next prime is 205650079. The reversal of 205650066 is 660056502.

It is a sphenic number, since it is the product of 3 distinct primes.

205650066 is an admirable number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17137500 + ... + 17137511.

It is an arithmetic number, because the mean of its divisors is an integer number (51412518).

Almost surely, 2^205650066 is an apocalyptic number.

205650066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205650066 is a wasteful number, since it uses less digits than its factorization.

205650066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34275016.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 205650066 is about 14340.5043844350. The cubic root of 205650066 is about 590.2594530627.

The spelling of 205650066 in words is "two hundred five million, six hundred fifty thousand, sixty-six".