6538861 has 8 divisors (see below), whose sum is σ = 7714304. Its totient is φ = 5423760.

The previous prime is 6538859. The next prime is 6538879. The reversal of 6538861 is 1688356.

6538861 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 6538861 - 2¹ = 6538859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6538861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6538561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14850 + ... + 15283.

It is an arithmetic number, because the mean of its divisors is an integer number (964288).

Almost surely, 2^6538861 is an apocalyptic number.

It is an amenable number.

6538861 is a deficient number, since it is larger than the sum of its proper divisors (1175443).

6538861 is a wasteful number, since it uses less digits than its factorization.

6538861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30171.

The product of its digits is 34560, while the sum is 37.

The square root of 6538861 is about 2557.1196686898. The cubic root of 6538861 is about 186.9967399129.

The spelling of 6538861 in words is "six million, five hundred thirty-eight thousand, eight hundred sixty-one".