205060066 has 16 divisors (see below), whose sum is σ = 316472544. Its totient is φ = 99611424.

The previous prime is 205060061. The next prime is 205060067. The reversal of 205060066 is 660060502.

It is a self number, because there is not a number n which added to its sum of digits gives 205060066.

It is not an unprimeable number, because it can be changed into a prime (205060061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 700 + ... + 20263.

It is an arithmetic number, because the mean of its divisors is an integer number (19779534).

Almost surely, 2^205060066 is an apocalyptic number.

205060066 is a deficient number, since it is larger than the sum of its proper divisors (111412478).

205060066 is a wasteful number, since it uses less digits than its factorization.

205060066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21105.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 205060066 is about 14319.9185053547. The cubic root of 205060066 is about 589.6944371982.

The spelling of 205060066 in words is "two hundred five million, sixty thousand, sixty-six".