6516449 has 4 divisors (see below), whose sum is σ = 6859440. Its totient is φ = 6173460.

The previous prime is 6516439. The next prime is 6516463. The reversal of 6516449 is 9446156.

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 6516449 - 2¹² = 6512353 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (6516439) 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, 171467 + ... + 171504.

It is an arithmetic number, because the mean of its divisors is an integer number (1714860).

Almost surely, 2^6516449 is an apocalyptic number.

It is an amenable number.

6516449 is a deficient number, since it is larger than the sum of its proper divisors (342991).

6516449 is a wasteful number, since it uses less digits than its factorization.

6516449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342990.

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

The square root of 6516449 is about 2552.7336327945. The cubic root of 6516449 is about 186.7828510684.

The spelling of 6516449 in words is "six million, five hundred sixteen thousand, four hundred forty-nine".