6505857 has 12 divisors (see below), whose sum is σ = 9616464. Its totient is φ = 4236120.

The previous prime is 6505841. The next prime is 6505859. The reversal of 6505857 is 7585056.

It is not a de Polignac number, because 6505857 - 2⁴ = 6505841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6505859) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8019 + ... + 8792.

It is an arithmetic number, because the mean of its divisors is an integer number (801372).

Almost surely, 2^6505857 is an apocalyptic number.

It is an amenable number.

6505857 is a deficient number, since it is larger than the sum of its proper divisors (3110607).

6505857 is a wasteful number, since it uses less digits than its factorization.

6505857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16860 (or 16857 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The square root of 6505857 is about 2550.6581503604. The cubic root of 6505857 is about 186.6815956739.

The spelling of 6505857 in words is "six million, five hundred five thousand, eight hundred fifty-seven".