6642213 has 8 divisors (see below), whose sum is σ = 8892576. Its totient is φ = 4410000.

The previous prime is 6642211. The next prime is 6642281. The reversal of 6642213 is 3122466.

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

It is not a de Polignac number, because 6642213 - 2¹ = 6642211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6642211) 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 7 ways as a sum of consecutive naturals, for example, 3658 + ... + 5163.

It is an arithmetic number, because the mean of its divisors is an integer number (1111572).

Almost surely, 2^6642213 is an apocalyptic number.

It is an amenable number.

6642213 is a deficient number, since it is larger than the sum of its proper divisors (2250363).

6642213 is a wasteful number, since it uses less digits than its factorization.

6642213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9075.

The product of its digits is 1728, while the sum is 24.

The square root of 6642213 is about 2577.2491148509. The cubic root of 6642213 is about 187.9768060265.

Adding to 6642213 its reverse (3122466), we get a palindrome (9764679).

The spelling of 6642213 in words is "six million, six hundred forty-two thousand, two hundred thirteen".