6541685 has 8 divisors (see below), whose sum is σ = 8311896. Its totient is φ = 4925440.

The previous prime is 6541663. The next prime is 6541687. The reversal of 6541685 is 5861456.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 276676 + 6265009 = 526^2 + 2503^2 .

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

It is not a de Polignac number, because 6541685 - 2⁶ = 6541621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6541687) 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, 38396 + ... + 38565.

It is an arithmetic number, because the mean of its divisors is an integer number (1038987).

Almost surely, 2^6541685 is an apocalyptic number.

It is an amenable number.

6541685 is a deficient number, since it is larger than the sum of its proper divisors (1770211).

6541685 is a wasteful number, since it uses less digits than its factorization.

6541685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76983.

The product of its digits is 28800, while the sum is 35.

The square root of 6541685 is about 2557.6717928616. The cubic root of 6541685 is about 187.0236560577.

The spelling of 6541685 in words is "six million, five hundred forty-one thousand, six hundred eighty-five".