6500000 has 84 divisors (see below), whose sum is σ = 17226342. Its totient is φ = 2400000.

The previous prime is 6499991. The next prime is 6500003. The reversal of 6500000 is 56.

It can be written as a sum of positive squares in 7 ways, for example, as 4682896 + 1817104 = 2164^2 + 1348^2 .

It is a sliding number, since 6500000 = 2500000 + 4000000 and 1/2500000 + 1/4000000 = 0.0000006500000.

It is a hoax number, since the sum of its digits (11) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (6500003) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 499994 + ... + 500006.

Almost surely, 2^6500000 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 6500000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8613171).

6500000 is an abundant number, since it is smaller than the sum of its proper divisors (10726342).

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

6500000 is an frugal number, since it uses more digits than its factorization.

6500000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53 (or 20 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 6500000 is about 2549.5097567964. The cubic root of 6500000 is about 186.6255578409.

Adding to 6500000 its reverse (56), we get a palindrome (6500056).

The spelling of 6500000 in words is "six million, five hundred thousand".