650500505 has 4 divisors (see below), whose sum is σ = 780600612. Its totient is φ = 520400400.

The previous prime is 650500493. The next prime is 650500519. The reversal of 650500505 is 505005056.

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 313006864 + 337493641 = 17692^2 + 18371^2 .

It is not a de Polignac number, because 650500505 - 2¹² = 650496409 is a prime.

It is a Duffinian number.

It is a Curzon 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, 65050046 + ... + 65050055.

It is an arithmetic number, because the mean of its divisors is an integer number (195150153).

Almost surely, 2^650500505 is an apocalyptic number.

It is an amenable number.

650500505 is a deficient number, since it is larger than the sum of its proper divisors (130100107).

650500505 is a wasteful number, since it uses less digits than its factorization.

650500505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130100106.

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 650500505 is about 25504.9113897696. The cubic root of 650500505 is about 866.4613852231.

The spelling of 650500505 in words is "six hundred fifty million, five hundred thousand, five hundred five".