215210065 has 8 divisors (see below), whose sum is σ = 295145280. Its totient is φ = 147572592.

The previous prime is 215210053. The next prime is 215210071. The reversal of 215210065 is 560012512.

215210065 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 cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215210065 is a prime.

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, 3074395 + ... + 3074464.

It is an arithmetic number, because the mean of its divisors is an integer number (36893160).

Almost surely, 2^215210065 is an apocalyptic number.

It is an amenable number.

215210065 is a deficient number, since it is larger than the sum of its proper divisors (79935215).

215210065 is an equidigital number, since it uses as much as digits as its factorization.

215210065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6148871.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 215210065 is about 14670.0397068311. The cubic root of 215210065 is about 599.2676852592.

Adding to 215210065 its reverse (560012512), we get a palindrome (775222577).

The spelling of 215210065 in words is "two hundred fifteen million, two hundred ten thousand, sixty-five".