6520630611 has 64 divisors (see below), whose sum is σ = 9957136896. Its totient is φ = 3761049600.

The previous prime is 6520630601. The next prime is 6520630621. The reversal of 6520630611 is 1160360256.

It is an interprime number because it is at equal distance from previous prime (6520630601) and next prime (6520630621).

It is not a de Polignac number, because 6520630611 - 2¹⁹ = 6520106323 is a prime.

It is a super-2 number, since 2×6520630611² = 85037247130220466642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6520630601) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10567975 + ... + 10568591.

It is an arithmetic number, because the mean of its divisors is an integer number (155580264).

Almost surely, 2^6520630611 is an apocalyptic number.

6520630611 is a deficient number, since it is larger than the sum of its proper divisors (3436506285).

6520630611 is a wasteful number, since it uses less digits than its factorization.

6520630611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 6520630611 is about 80750.4217388368. The cubic root of 6520630611 is about 1868.2279543163.

Adding to 6520630611 its reverse (1160360256), we get a palindrome (7680990867).

It can be divided in two parts, 65 and 20630611, that added together give a triangular number (20630676 = T₆₄₂₃).

The spelling of 6520630611 in words is "six billion, five hundred twenty million, six hundred thirty thousand, six hundred eleven".