650505071 has 4 divisors (see below), whose sum is σ = 684742200. Its totient is φ = 616267944.

The previous prime is 650505043. The next prime is 650505137. The reversal of 650505071 is 170505056.

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

It is a cyclic number.

It is not a de Polignac number, because 650505071 - 2¹⁸ = 650242927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (650505001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17118536 + ... + 17118573.

It is an arithmetic number, because the mean of its divisors is an integer number (171185550).

Almost surely, 2^650505071 is an apocalyptic number.

650505071 is a deficient number, since it is larger than the sum of its proper divisors (34237129).

650505071 is a wasteful number, since it uses less digits than its factorization.

650505071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34237128.

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 650505071 is about 25505.0009017839. Note that the first 3 decimals coincide. The cubic root of 650505071 is about 866.4634125100.

The spelling of 650505071 in words is "six hundred fifty million, five hundred five thousand, seventy-one".