6497609 has 4 divisors (see below), whose sum is σ = 6635904. Its totient is φ = 6359316.

The previous prime is 6497591. The next prime is 6497683. The reversal of 6497609 is 9067946.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6497609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6497209) 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, 69077 + ... + 69170.

It is an arithmetic number, because the mean of its divisors is an integer number (1658976).

Almost surely, 2^6497609 is an apocalyptic number.

It is an amenable number.

6497609 is a deficient number, since it is larger than the sum of its proper divisors (138295).

6497609 is a wasteful number, since it uses less digits than its factorization.

6497609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138294.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 6497609 is about 2549.0407999873. The cubic root of 6497609 is about 186.6026718699.

The spelling of 6497609 in words is "six million, four hundred ninety-seven thousand, six hundred nine".