6500609 has 4 divisors (see below), whose sum is σ = 6623316. Its totient is φ = 6377904.

The previous prime is 6500597. The next prime is 6500621. The reversal of 6500609 is 9060056.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (6500597) and next prime (6500621).

It can be written as a sum of positive squares in 2 ways, for example, as 2310400 + 4190209 = 1520^2 + 2047^2 .

It is a cyclic number.

It is not a de Polignac number, because 6500609 - 2²⁰ = 5452033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6500209) 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, 61274 + ... + 61379.

It is an arithmetic number, because the mean of its divisors is an integer number (1655829).

Almost surely, 2^6500609 is an apocalyptic number.

It is an amenable number.

6500609 is a deficient number, since it is larger than the sum of its proper divisors (122707).

6500609 is a wasteful number, since it uses less digits than its factorization.

6500609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122706.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 6500609 is about 2549.6291887253. The cubic root of 6500609 is about 186.6313861186.

The spelling of 6500609 in words is "six million, five hundred thousand, six hundred nine".