6543941 has 4 divisors (see below), whose sum is σ = 6549612. Its totient is φ = 6538272.

The previous prime is 6543907. The next prime is 6543947. The reversal of 6543941 is 1493456.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3724900 + 2819041 = 1930^2 + 1679^2 .

It is a cyclic number.

It is not a de Polignac number, because 6543941 - 2⁶ = 6543877 is a prime.

It is a super-2 number, since 2×6543941² = 85646327622962, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6543898 and 6543907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6543947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416 + ... + 3641.

It is an arithmetic number, because the mean of its divisors is an integer number (1637403).

Almost surely, 2^6543941 is an apocalyptic number.

It is an amenable number.

6543941 is a deficient number, since it is larger than the sum of its proper divisors (5671).

6543941 is a wasteful number, since it uses less digits than its factorization.

6543941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5670.

The product of its digits is 12960, while the sum is 32.

The square root of 6543941 is about 2558.1127809383. The cubic root of 6543941 is about 187.0451529083.

The spelling of 6543941 in words is "six million, five hundred forty-three thousand, nine hundred forty-one".