216088205 has 8 divisors (see below), whose sum is σ = 261601272. Its totient is φ = 171340288.

The previous prime is 216088189. The next prime is 216088211. The reversal of 216088205 is 502880612.

It can be written as a sum of positive squares in 4 ways, for example, as 14845609 + 201242596 = 3853^2 + 14186^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 216088205 - 2⁴ = 216088189 is a prime.

It is a super-2 number, since 2×216088205² = 93388224680244050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190664 + ... + 191793.

It is an arithmetic number, because the mean of its divisors is an integer number (32700159).

Almost surely, 2^216088205 is an apocalyptic number.

It is an amenable number.

216088205 is a deficient number, since it is larger than the sum of its proper divisors (45513067).

216088205 is a wasteful number, since it uses less digits than its factorization.

216088205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382575.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 216088205 is about 14699.9389454514. The cubic root of 216088205 is about 600.0816601818.

The spelling of 216088205 in words is "two hundred sixteen million, eighty-eight thousand, two hundred five".