6549641 has 16 divisors (see below), whose sum is σ = 8273664. Its totient is φ = 5051904.

The previous prime is 6549619. The next prime is 6549671. The reversal of 6549641 is 1469456.

6549641 = T₁₈ + T₁₉ + ... + T₃₃₉.

It is not a de Polignac number, because 6549641 - 2¹⁸ = 6287497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6549601) 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 15 ways as a sum of consecutive naturals, for example, 1541 + ... + 3933.

It is an arithmetic number, because the mean of its divisors is an integer number (517104).

Almost surely, 2^6549641 is an apocalyptic number.

It is an amenable number.

6549641 is a deficient number, since it is larger than the sum of its proper divisors (1724023).

6549641 is a wasteful number, since it uses less digits than its factorization.

6549641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2440.

The product of its digits is 25920, while the sum is 35.

The square root of 6549641 is about 2559.2266409992. The cubic root of 6549641 is about 187.0994447572.

The spelling of 6549641 in words is "six million, five hundred forty-nine thousand, six hundred forty-one".