65216270 has 32 divisors (see below), whose sum is σ = 139995648. Its totient is φ = 21387168.

The previous prime is 65216209. The next prime is 65216297. The reversal of 65216270 is 7261256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18644 + ... + 21863.

It is an arithmetic number, because the mean of its divisors is an integer number (4374864).

Almost surely, 2^65216270 is an apocalyptic number.

65216270 is an abundant number, since it is smaller than the sum of its proper divisors (74779378).

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

65216270 is a wasteful number, since it uses less digits than its factorization.

65216270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40544.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 65216270 is about 8075.6591062278. The cubic root of 65216270 is about 402.5180116163.

The spelling of 65216270 in words is "sixty-five million, two hundred sixteen thousand, two hundred seventy".