6549961 has 4 divisors (see below), whose sum is σ = 7145424. Its totient is φ = 5954500.

The previous prime is 6549937. The next prime is 6549973. The reversal of 6549961 is 1699456.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6549961 - 2¹⁵ = 6517193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6549901) 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 3 ways as a sum of consecutive naturals, for example, 297715 + ... + 297736.

It is an arithmetic number, because the mean of its divisors is an integer number (1786356).

Almost surely, 2^6549961 is an apocalyptic number.

It is an amenable number.

6549961 is a deficient number, since it is larger than the sum of its proper divisors (595463).

6549961 is a wasteful number, since it uses less digits than its factorization.

6549961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595462.

The product of its digits is 58320, while the sum is 40.

The square root of 6549961 is about 2559.2891591221. The cubic root of 6549961 is about 187.1024917866.

The spelling of 6549961 in words is "six million, five hundred forty-nine thousand, nine hundred sixty-one".