6642101 has 8 divisors (see below), whose sum is σ = 6960384. Its totient is φ = 6326320.

The previous prime is 6642089. The next prime is 6642109. The reversal of 6642101 is 1012466.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6642101 - 2¹⁰ = 6641077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6642109) 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 7 ways as a sum of consecutive naturals, for example, 6836 + ... + 7746.

It is an arithmetic number, because the mean of its divisors is an integer number (870048).

Almost surely, 2^6642101 is an apocalyptic number.

It is an amenable number.

6642101 is a deficient number, since it is larger than the sum of its proper divisors (318283).

6642101 is a wasteful number, since it uses less digits than its factorization.

6642101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 6642101 is about 2577.2273861652. The cubic root of 6642101 is about 187.9757494750.

Adding to 6642101 its reverse (1012466), we get a palindrome (7654567).

The spelling of 6642101 in words is "six million, six hundred forty-two thousand, one hundred one".