6408857 has 12 divisors (see below), whose sum is σ = 8029476. Its totient is φ = 5070240.

The previous prime is 6408851. The next prime is 6408859. The reversal of 6408857 is 7588046.

It can be written as a sum of positive squares in 2 ways, for example, as 2202256 + 4206601 = 1484^2 + 2051^2 .

It is not a de Polignac number, because 6408857 - 2⁴ = 6408841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6408857.

It is not an unprimeable number, because it can be changed into a prime (6408851) 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 11 ways as a sum of consecutive naturals, for example, 4394 + ... + 5667.

It is an arithmetic number, because the mean of its divisors is an integer number (669123).

Almost surely, 2^6408857 is an apocalyptic number.

It is an amenable number.

6408857 is a deficient number, since it is larger than the sum of its proper divisors (1620619).

6408857 is a wasteful number, since it uses less digits than its factorization.

6408857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10088 (or 10081 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 6408857 is about 2531.5720412424. The cubic root of 6408857 is about 185.7491608497.

The spelling of 6408857 in words is "six million, four hundred eight thousand, eight hundred fifty-seven".