65000072 has 8 divisors (see below), whose sum is σ = 121875150. Its totient is φ = 32500032.

The previous prime is 65000071. The next prime is 65000081. The reversal of 65000072 is 27000056.

It can be written as a sum of positive squares in only one way, i.e., 35688676 + 29311396 = 5974^2 + 5414^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (65000071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4062497 + ... + 4062512.

Almost surely, 2^65000072 is an apocalyptic number.

It is an amenable number.

65000072 is a deficient number, since it is larger than the sum of its proper divisors (56875078).

65000072 is a wasteful number, since it uses less digits than its factorization.

65000072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8125015 (or 8125011 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 65000072 is about 8062.2622135478. The cubic root of 65000072 is about 402.0727243164.

The spelling of 65000072 in words is "sixty-five million, seventy-two", and thus it is an aban number and an uban number.