6541641 has 10 divisors (see below), whose sum is σ = 9772202. Its totient is φ = 4361040.

The previous prime is 6541621. The next prime is 6541663. The reversal of 6541641 is 1461456.

6541641 is a `hidden beast` number, since 654 + 1 + 6 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4862025 + 1679616 = 2205^2 + 1296^2 .

It is not a de Polignac number, because 6541641 - 2⁵ = 6541609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6541621) 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 9 ways as a sum of consecutive naturals, for example, 40300 + ... + 40461.

Almost surely, 2^6541641 is an apocalyptic number.

It is an amenable number.

6541641 is a deficient number, since it is larger than the sum of its proper divisors (3230561).

6541641 is an equidigital number, since it uses as much as digits as its factorization.

6541641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80773 (or 80764 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 6541641 is about 2557.6631912744. The cubic root of 6541641 is about 187.0232367438.

The spelling of 6541641 in words is "six million, five hundred forty-one thousand, six hundred forty-one".