6642908 has 6 divisors (see below), whose sum is σ = 11625096. Its totient is φ = 3321452.

The previous prime is 6642907. The next prime is 6642917. The reversal of 6642908 is 8092466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6642907) 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 as a sum of consecutive naturals, namely, 830360 + ... + 830367.

It is an arithmetic number, because the mean of its divisors is an integer number (1937516).

Almost surely, 2^6642908 is an apocalyptic number.

It is an amenable number.

6642908 is a deficient number, since it is larger than the sum of its proper divisors (4982188).

6642908 is a wasteful number, since it uses less digits than its factorization.

6642908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660731 (or 1660729 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 6642908 is about 2577.3839450109. The cubic root of 6642908 is about 187.9833620405.

The spelling of 6642908 in words is "six million, six hundred forty-two thousand, nine hundred eight".