65065218 has 16 divisors (see below), whose sum is σ = 134328576. Its totient is φ = 20988720.

The previous prime is 65065213. The next prime is 65065219. The reversal of 65065218 is 81256056.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65065213) 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, 174721 + ... + 175092.

It is an arithmetic number, because the mean of its divisors is an integer number (8395536).

Almost surely, 2^65065218 is an apocalyptic number.

65065218 is an abundant number, since it is smaller than the sum of its proper divisors (69263358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65065218 is a wasteful number, since it uses less digits than its factorization.

65065218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349849.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 65065218 is about 8066.3013829140. The cubic root of 65065218 is about 402.2070045975.

The spelling of 65065218 in words is "sixty-five million, sixty-five thousand, two hundred eighteen".