205216610 has 8 divisors (see below), whose sum is σ = 369389916. Its totient is φ = 82086640.

The previous prime is 205216591. The next prime is 205216619. The reversal of 205216610 is 16612502.

205216610 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 200477281 + 4739329 = 14159^2 + 2177^2 .

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

It is a super-2 number, since 2×205216610² = 84227714039784200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (205216619) 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, 10260821 + ... + 10260840.

Almost surely, 2^205216610 is an apocalyptic number.

205216610 is a deficient number, since it is larger than the sum of its proper divisors (164173306).

205216610 is a wasteful number, since it uses less digits than its factorization.

205216610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20521668.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 205216610 is about 14325.3834154622. The cubic root of 205216610 is about 589.8444577051.

The spelling of 205216610 in words is "two hundred five million, two hundred sixteen thousand, six hundred ten".