6530005620 has 96 divisors (see below), whose sum is σ = 20374704000. Its totient is φ = 1736266752.

The previous prime is 6530005613. The next prime is 6530005637. The reversal of 6530005620 is 265000356.

6530005620 is a `hidden beast` number, since 6 + 5 + 30 + 0 + 0 + 5 + 620 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 169956 + ... + 204804.

It is an arithmetic number, because the mean of its divisors is an integer number (212236500).

Almost surely, 2^6530005620 is an apocalyptic number.

6530005620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6530005620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10187352000).

6530005620 is an abundant number, since it is smaller than the sum of its proper divisors (13844698380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6530005620 is a wasteful number, since it uses less digits than its factorization.

6530005620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35214 (or 35206 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 6530005620 is about 80808.4501769462. The cubic root of 6530005620 is about 1869.1228711710.

Adding to 6530005620 its reverse (265000356), we get a palindrome (6795005976).

The spelling of 6530005620 in words is "six billion, five hundred thirty million, five thousand, six hundred twenty".