6497213 has 4 divisors (see below), whose sum is σ = 6879420. Its totient is φ = 6115008.

The previous prime is 6497209. The next prime is 6497243. The reversal of 6497213 is 3127946.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3127946 = 2 ⋅1563973.

It can be written as a sum of positive squares in 2 ways, for example, as 2951524 + 3545689 = 1718^2 + 1883^2 .

It is a cyclic number.

It is not a de Polignac number, because 6497213 - 2² = 6497209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6497213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6497203) 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, 191078 + ... + 191111.

It is an arithmetic number, because the mean of its divisors is an integer number (1719855).

Almost surely, 2^6497213 is an apocalyptic number.

It is an amenable number.

6497213 is a deficient number, since it is larger than the sum of its proper divisors (382207).

6497213 is a wasteful number, since it uses less digits than its factorization.

6497213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382206.

The product of its digits is 9072, while the sum is 32.

The square root of 6497213 is about 2548.9631225265. The cubic root of 6497213 is about 186.5988809288.

The spelling of 6497213 in words is "six million, four hundred ninety-seven thousand, two hundred thirteen".