6538865 has 16 divisors (see below), whose sum is σ = 8078400. Its totient is φ = 5079360.

The previous prime is 6538859. The next prime is 6538879. The reversal of 6538865 is 5688356.

It is not a de Polignac number, because 6538865 - 2¹⁶ = 6473329 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43811 + ... + 43959.

It is an arithmetic number, because the mean of its divisors is an integer number (504900).

Almost surely, 2^6538865 is an apocalyptic number.

It is an amenable number.

6538865 is a deficient number, since it is larger than the sum of its proper divisors (1539535).

6538865 is a wasteful number, since it uses less digits than its factorization.

6538865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352.

The product of its digits is 172800, while the sum is 41.

The square root of 6538865 is about 2557.1204508196. The cubic root of 6538865 is about 186.9967780432.

The spelling of 6538865 in words is "six million, five hundred thirty-eight thousand, eight hundred sixty-five".