65145216 has 32 divisors (see below), whose sum is σ = 173043000. Its totient is φ = 21714944.

The previous prime is 65145211. The next prime is 65145221. The reversal of 65145216 is 61254156.

It is an interprime number because it is at equal distance from previous prime (65145211) and next prime (65145221).

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65145211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84441 + ... + 85208.

Almost surely, 2^65145216 is an apocalyptic number.

It is an amenable number.

65145216 is an abundant number, since it is smaller than the sum of its proper divisors (107897784).

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

65145216 is a wasteful number, since it uses less digits than its factorization.

65145216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169666 (or 169654 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 65145216 is about 8071.2586379077. The cubic root of 65145216 is about 402.3717755724.

The spelling of 65145216 in words is "sixty-five million, one hundred forty-five thousand, two hundred sixteen".