6649100 has 18 divisors (see below), whose sum is σ = 14428764. Its totient is φ = 2659600.

The previous prime is 6649099. The next prime is 6649103. The reversal of 6649100 is 19466.

It is a self number, because there is not a number n which added to its sum of digits gives 6649100.

It is not an unprimeable number, because it can be changed into a prime (6649103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33146 + ... + 33345.

It is an arithmetic number, because the mean of its divisors is an integer number (801598).

Almost surely, 2^6649100 is an apocalyptic number.

It is an amenable number.

6649100 is an abundant number, since it is smaller than the sum of its proper divisors (7779664).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6649100 is a wasteful number, since it uses less digits than its factorization.

6649100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66505 (or 66498 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 6649100 is about 2578.5848832257. The cubic root of 6649100 is about 188.0417517048.

The spelling of 6649100 in words is "six million, six hundred forty-nine thousand, one hundred".