6320213 has 4 divisors (see below), whose sum is σ = 6327660. Its totient is φ = 6312768.

The previous prime is 6320189. The next prime is 6320219. The reversal of 6320213 is 3120236.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3073009 + 3247204 = 1753^2 + 1802^2 .

It is a cyclic number.

It is not a de Polignac number, because 6320213 - 2¹² = 6316117 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6320191 and 6320200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6320219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2258 + ... + 4211.

It is an arithmetic number, because the mean of its divisors is an integer number (1581915).

Almost surely, 2^6320213 is an apocalyptic number.

It is an amenable number.

6320213 is a deficient number, since it is larger than the sum of its proper divisors (7447).

6320213 is an equidigital number, since it uses as much as digits as its factorization.

6320213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7446.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 6320213 is about 2514.0033810638. The cubic root of 6320213 is about 184.8887863343. Note that the first 3 decimals are identical.

Subtracting from 6320213 its sum of digits (17), we obtain a square (6320196 = 2514²).

Adding to 6320213 its reverse (3120236), we get a palindrome (9440449).

The spelling of 6320213 in words is "six million, three hundred twenty thousand, two hundred thirteen".