6541613 has 8 divisors (see below), whose sum is σ = 7098168. Its totient is φ = 5992704.

The previous prime is 6541609. The next prime is 6541621. The reversal of 6541613 is 3161456.

6541613 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3364 + 6538249 = 58^2 + 2557^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 6541613 - 2² = 6541609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6541663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56 + ... + 3617.

It is an arithmetic number, because the mean of its divisors is an integer number (887271).

Almost surely, 2^6541613 is an apocalyptic number.

It is an amenable number.

6541613 is a deficient number, since it is larger than the sum of its proper divisors (556555).

6541613 is a wasteful number, since it uses less digits than its factorization.

6541613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3823.

The product of its digits is 2160, while the sum is 26.

The square root of 6541613 is about 2557.6577175220. The cubic root of 6541613 is about 187.0229699066.

The spelling of 6541613 in words is "six million, five hundred forty-one thousand, six hundred thirteen".