6513449 has 4 divisors (see below), whose sum is σ = 6564864. Its totient is φ = 6462036.

The previous prime is 6513427. The next prime is 6513457. The reversal of 6513449 is 9443156.

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 a de Polignac number, because none of the positive numbers 2^k-6513449 is a prime.

It is a super-4 number, since 4×6513449⁴ (a number of 28 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6513649) 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 3 ways as a sum of consecutive naturals, for example, 25517 + ... + 25770.

It is an arithmetic number, because the mean of its divisors is an integer number (1641216).

Almost surely, 2^6513449 is an apocalyptic number.

It is an amenable number.

6513449 is a deficient number, since it is larger than the sum of its proper divisors (51415).

6513449 is a wasteful number, since it uses less digits than its factorization.

6513449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51414.

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

The square root of 6513449 is about 2552.1459597758. The cubic root of 6513449 is about 186.7541833812.

The spelling of 6513449 in words is "six million, five hundred thirteen thousand, four hundred forty-nine".