6503213 has 4 divisors (see below), whose sum is σ = 6515328. Its totient is φ = 6491100.

The previous prime is 6503209. The next prime is 6503239. The reversal of 6503213 is 3123056.

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 6503213 - 2² = 6503209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6503113) 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, 5213 + ... + 6338.

It is an arithmetic number, because the mean of its divisors is an integer number (1628832).

Almost surely, 2^6503213 is an apocalyptic number.

It is an amenable number.

6503213 is a deficient number, since it is larger than the sum of its proper divisors (12115).

6503213 is a wasteful number, since it uses less digits than its factorization.

6503213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12114.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 6503213 is about 2550.1398000894. The cubic root of 6503213 is about 186.6563029252.

Adding to 6503213 its reverse (3123056), we get a palindrome (9626269).

The spelling of 6503213 in words is "six million, five hundred three thousand, two hundred thirteen".