65216218 has 8 divisors (see below), whose sum is σ = 98170848. Its totient is φ = 32492604.

The previous prime is 65216209. The next prime is 65216297. The reversal of 65216218 is 81261256.

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

It is a self number, because there is not a number n which added to its sum of digits gives 65216218.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57046 + ... + 58177.

It is an arithmetic number, because the mean of its divisors is an integer number (12271356).

Almost surely, 2^65216218 is an apocalyptic number.

65216218 is a deficient number, since it is larger than the sum of its proper divisors (32954630).

65216218 is a wasteful number, since it uses less digits than its factorization.

65216218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115508.

The product of its digits is 5760, while the sum is 31.

The square root of 65216218 is about 8075.6558866757. The cubic root of 65216218 is about 402.5179046341.

The spelling of 65216218 in words is "sixty-five million, two hundred sixteen thousand, two hundred eighteen".