6642203 has 4 divisors (see below), whose sum is σ = 6821760. Its totient is φ = 6462648.

The previous prime is 6642187. The next prime is 6642211. The reversal of 6642203 is 3022466.

6642203 is nontrivially palindromic in base 7.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3022466 = 2 ⋅1511233.

It is a cyclic number.

It is not a de Polignac number, because 6642203 - 2⁴ = 6642187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6642283) 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, 89723 + ... + 89796.

It is an arithmetic number, because the mean of its divisors is an integer number (1705440).

Almost surely, 2^6642203 is an apocalyptic number.

6642203 is a deficient number, since it is larger than the sum of its proper divisors (179557).

6642203 is a wasteful number, since it uses less digits than its factorization.

6642203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179556.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 6642203 is about 2577.2471747972. The cubic root of 6642203 is about 187.9767116920.

Adding to 6642203 its reverse (3022466), we get a palindrome (9664669).

The spelling of 6642203 in words is "six million, six hundred forty-two thousand, two hundred three".