650000065 has 16 divisors (see below), whose sum is σ = 916364736. Its totient is φ = 436363200.

The previous prime is 650000063. The next prime is 650000077. The reversal of 650000065 is 560000056.

It is not a de Polignac number, because 650000065 - 2¹ = 650000063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (650000063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 453831 + ... + 455260.

It is an arithmetic number, because the mean of its divisors is an integer number (57272796).

Almost surely, 2^650000065 is an apocalyptic number.

650000065 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

650000065 is a deficient number, since it is larger than the sum of its proper divisors (266364671).

650000065 is a wasteful number, since it uses less digits than its factorization.

650000065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909120.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 650000065 is about 25495.0988427188. The cubic root of 650000065 is about 866.2391342155.

Adding to 650000065 its reverse (560000056), we get a palindrome (1210000121).

Subtracting from 650000065 its reverse (560000056), we obtain a palindrome (90000009).

The spelling of 650000065 in words is "six hundred fifty million, sixty-five", and thus it is an aban number.