205205066 has 8 divisors (see below), whose sum is σ = 335790144. Its totient is φ = 93275020.

The previous prime is 205205059. The next prime is 205205069. The reversal of 205205066 is 660502502.

It is a happy number.

205205066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×205205066² = 84218238224128712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (205205069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4663730 + ... + 4663773.

It is an arithmetic number, because the mean of its divisors is an integer number (41973768).

Almost surely, 2^205205066 is an apocalyptic number.

205205066 is a deficient number, since it is larger than the sum of its proper divisors (130585078).

205205066 is a wasteful number, since it uses less digits than its factorization.

205205066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9327516.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 205205066 is about 14324.9804886429. The cubic root of 205205066 is about 589.8333973721.

Adding to 205205066 its reverse (660502502), we get a palindrome (865707568).

The spelling of 205205066 in words is "two hundred five million, two hundred five thousand, sixty-six".