6520423000 has 256 divisors, whose sum is σ = 19037491200. Its totient is φ = 2035238400.

The previous prime is 6520422991. The next prime is 6520423001. The reversal of 6520423000 is 3240256.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6520423001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7188547 + ... + 7189453.

It is an arithmetic number, because the mean of its divisors is an integer number (74365200).

Almost surely, 2^6520423000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6520423000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9518745600).

6520423000 is an abundant number, since it is smaller than the sum of its proper divisors (12517068200).

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

6520423000 is a wasteful number, since it uses less digits than its factorization.

6520423000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027 (or 1013 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 6520423000 is about 80749.1362182903. The cubic root of 6520423000 is about 1868.2081265413.

Adding to 6520423000 its reverse (3240256), we get a palindrome (6523663256).

The spelling of 6520423000 in words is "six billion, five hundred twenty million, four hundred twenty-three thousand".