6642422 has 8 divisors (see below), whose sum is σ = 10003176. Its totient is φ = 3308032.

The previous prime is 6642409. The next prime is 6642431. The reversal of 6642422 is 2242466.

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

It is a junction number, because it is equal to n+sod(n) for n = 6642391 and 6642400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5948 + ... + 6975.

It is an arithmetic number, because the mean of its divisors is an integer number (1250397).

Almost surely, 2^6642422 is an apocalyptic number.

6642422 is a deficient number, since it is larger than the sum of its proper divisors (3360754).

6642422 is a wasteful number, since it uses less digits than its factorization.

6642422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13182.

The product of its digits is 4608, while the sum is 26.

The square root of 6642422 is about 2577.2896616407. The cubic root of 6642422 is about 187.9787775953.

Adding to 6642422 its reverse (2242466), we get a palindrome (8884888).

The spelling of 6642422 in words is "six million, six hundred forty-two thousand, four hundred twenty-two".