6438513 has 8 divisors (see below), whose sum is σ = 8601376. Its totient is φ = 4284000.

The previous prime is 6438463. The next prime is 6438539. The reversal of 6438513 is 3158346.

6438513 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6438513 - 2¹⁰ = 6437489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6438583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18 + ... + 3588.

It is an arithmetic number, because the mean of its divisors is an integer number (1075172).

Almost surely, 2^6438513 is an apocalyptic number.

It is an amenable number.

6438513 is a deficient number, since it is larger than the sum of its proper divisors (2162863).

6438513 is a wasteful number, since it uses less digits than its factorization.

6438513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4175.

The product of its digits is 8640, while the sum is 30.

The square root of 6438513 is about 2537.4225111321. The cubic root of 6438513 is about 186.0352286146.

The spelling of 6438513 in words is "six million, four hundred thirty-eight thousand, five hundred thirteen".