650051065 has 4 divisors (see below), whose sum is σ = 780061284. Its totient is φ = 520040848.

The previous prime is 650051053. The next prime is 650051071. The reversal of 650051065 is 560150056.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 498539584 + 151511481 = 22328^2 + 12309^2 .

It is a cyclic number.

It is not a de Polignac number, because 650051065 - 2⁵ = 650051033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65005102 + ... + 65005111.

It is an arithmetic number, because the mean of its divisors is an integer number (195015321).

Almost surely, 2^650051065 is an apocalyptic number.

It is an amenable number.

650051065 is a deficient number, since it is larger than the sum of its proper divisors (130010219).

650051065 is a wasteful number, since it uses less digits than its factorization.

650051065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130010218.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 650051065 is about 25496.0990153396. The cubic root of 650051065 is about 866.2617891058.

The spelling of 650051065 in words is "six hundred fifty million, fifty-one thousand, sixty-five".