216612265 has 8 divisors (see below), whose sum is σ = 260015040. Its totient is φ = 173236272.

The previous prime is 216612259. The next prime is 216612269. The reversal of 216612265 is 562216612.

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 216612265 - 2³ = 216612257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216612269) 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, 23442 + ... + 31348.

It is an arithmetic number, because the mean of its divisors is an integer number (32501880).

Almost surely, 2^216612265 is an apocalyptic number.

It is an amenable number.

216612265 is a deficient number, since it is larger than the sum of its proper divisors (43402775).

216612265 is an equidigital number, since it uses as much as digits as its factorization.

216612265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13391.

The product of its digits is 8640, while the sum is 31.

The square root of 216612265 is about 14717.7533951347. The cubic root of 216612265 is about 600.5663772302.

Adding to 216612265 its reverse (562216612), we get a palindrome (778828877).

The spelling of 216612265 in words is "two hundred sixteen million, six hundred twelve thousand, two hundred sixty-five".