6520000 has 70 divisors (see below), whose sum is σ = 16266668. Its totient is φ = 2592000.

The previous prime is 6519991. The next prime is 6520057. The reversal of 6520000 is 256.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 39919 + ... + 40081.

Almost surely, 2^6520000 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 6520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8133334).

6520000 is an abundant number, since it is smaller than the sum of its proper divisors (9746668).

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

6520000 is an equidigital number, since it uses as much as digits as its factorization.

6520000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195 (or 170 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 6520000 is about 2553.4290669607. The cubic root of 6520000 is about 186.8167726855.

Adding to 6520000 its reverse (256), we get a palindrome (6520256).

The spelling of 6520000 in words is "six million, five hundred twenty thousand".