6421108 has 6 divisors (see below), whose sum is σ = 11236946. Its totient is φ = 3210552.

The previous prime is 6421099. The next prime is 6421111. The reversal of 6421108 is 8011246.

It can be written as a sum of positive squares in only one way, i.e., 6290064 + 131044 = 2508^2 + 362^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 802635 + ... + 802642.

Almost surely, 2^6421108 is an apocalyptic number.

It is an amenable number.

6421108 is a deficient number, since it is larger than the sum of its proper divisors (4815838).

6421108 is a wasteful number, since it uses less digits than its factorization.

6421108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605281 (or 1605279 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 6421108 is about 2533.9905287905. The cubic root of 6421108 is about 185.8674432260.

The spelling of 6421108 in words is "six million, four hundred twenty-one thousand, one hundred eight".