65500065 has 24 divisors (see below), whose sum is σ = 120213288. Its totient is φ = 32878080.

The previous prime is 65500063. The next prime is 65500073. The reversal of 65500065 is 56000556.

65500065 is a `hidden beast` number, since 655 + 0 + 0 + 0 + 6 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 29030544 + 36469521 = 5388^2 + 6039^2 .

It is not a de Polignac number, because 65500065 - 2¹ = 65500063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65500063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42046 + ... + 43575.

It is an arithmetic number, because the mean of its divisors is an integer number (5008887).

Almost surely, 2^65500065 is an apocalyptic number.

It is an amenable number.

65500065 is a deficient number, since it is larger than the sum of its proper divisors (54713223).

65500065 is a wasteful number, since it uses less digits than its factorization.

65500065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85649 (or 85646 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 65500065 is about 8093.2110438317. The cubic root of 65500065 is about 403.1010322869.

The spelling of 65500065 in words is "sixty-five million, five hundred thousand, sixty-five".