850648513 has 12 divisors (see below), whose sum is σ = 1006936084. Its totient is φ = 713829600.

The previous prime is 850648511. The next prime is 850648529. The reversal of 850648513 is 315846058.

It can be written as a sum of positive squares in 2 ways, for example, as 539725824 + 310922689 = 23232^2 + 17633^2 .

It is not a de Polignac number, because 850648513 - 2¹ = 850648511 is a prime.

It is a super-2 number, since 2×850648513² = 1447205785338222338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (850648511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 268818 + ... + 271963.

Almost surely, 2^850648513 is an apocalyptic number.

It is an amenable number.

850648513 is a deficient number, since it is larger than the sum of its proper divisors (156287571).

850648513 is a wasteful number, since it uses less digits than its factorization.

850648513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540816 (or 540805 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 850648513 is about 29165.8792598475. The cubic root of 850648513 is about 947.5090840880.

The spelling of 850648513 in words is "eight hundred fifty million, six hundred forty-eight thousand, five hundred thirteen".