6643072 has 16 divisors (see below), whose sum is σ = 13234500. Its totient is φ = 3321472.

The previous prime is 6643069. The next prime is 6643097. The reversal of 6643072 is 2703466.

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 6643072.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25822 + ... + 26077.

Almost surely, 2^6643072 is an apocalyptic number.

It is an amenable number.

6643072 is a deficient number, since it is larger than the sum of its proper divisors (6591428).

6643072 is an equidigital number, since it uses as much as digits as its factorization.

6643072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51913 (or 51901 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 6643072 is about 2577.4157600201. The cubic root of 6643072 is about 187.9849090044.

The spelling of 6643072 in words is "six million, six hundred forty-three thousand, seventy-two".