6643602 has 24 divisors (see below), whose sum is σ = 16451136. Its totient is φ = 1898136.

The previous prime is 6643589. The next prime is 6643607. The reversal of 6643602 is 2063466.

It is not an unprimeable number, because it can be changed into a prime (6643607) 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 11 ways as a sum of consecutive naturals, for example, 26238 + ... + 26489.

It is an arithmetic number, because the mean of its divisors is an integer number (685464).

Almost surely, 2^6643602 is an apocalyptic number.

6643602 is an abundant number, since it is smaller than the sum of its proper divisors (9807534).

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

6643602 is a wasteful number, since it uses less digits than its factorization.

6643602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52742 (or 52739 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 6643602 is about 2577.5185741329. The cubic root of 6643602 is about 187.9899081651.

The spelling of 6643602 in words is "six million, six hundred forty-three thousand, six hundred two".