6509897 has 8 divisors (see below), whose sum is σ = 6820800. Its totient is φ = 6201360.

The previous prime is 6509873. The next prime is 6509903. The reversal of 6509897 is 7989056.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6509897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6509197) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7622 + ... + 8432.

It is an arithmetic number, because the mean of its divisors is an integer number (852600).

Almost surely, 2^6509897 is an apocalyptic number.

It is an amenable number.

6509897 is a deficient number, since it is larger than the sum of its proper divisors (310903).

6509897 is a wasteful number, since it uses less digits than its factorization.

6509897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 6509897 is about 2551.4499799134. The cubic root of 6509897 is about 186.7202294561.

The spelling of 6509897 in words is "six million, five hundred nine thousand, eight hundred ninety-seven".