6500020 has 12 divisors (see below), whose sum is σ = 13650084. Its totient is φ = 2600000.

The previous prime is 6500003. The next prime is 6500023. The reversal of 6500020 is 200056.

It can be written as a sum of positive squares in 2 ways, for example, as 4443664 + 2056356 = 2108^2 + 1434^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6500023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162481 + ... + 162520.

It is an arithmetic number, because the mean of its divisors is an integer number (1137507).

Almost surely, 2^6500020 is an apocalyptic number.

It is an amenable number.

6500020 is an abundant number, since it is smaller than the sum of its proper divisors (7150064).

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

6500020 is a wasteful number, since it uses less digits than its factorization.

6500020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325010 (or 325008 counting only the distinct ones).

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

The square root of 6500020 is about 2549.5136791161. The cubic root of 6500020 is about 186.6257492515.

Adding to 6500020 its reverse (200056), we get a palindrome (6700076).

The spelling of 6500020 in words is "six million, five hundred thousand, twenty".