6645548 has 24 divisors (see below), whose sum is σ = 14314272. Its totient is φ = 2628864.

The previous prime is 6645547. The next prime is 6645557. The reversal of 6645548 is 8455466.

6645548 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (6645547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8765 + ... + 9492.

It is an arithmetic number, because the mean of its divisors is an integer number (596428).

Almost surely, 2^6645548 is an apocalyptic number.

It is an amenable number.

6645548 is an abundant number, since it is smaller than the sum of its proper divisors (7668724).

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

6645548 is a wasteful number, since it uses less digits than its factorization.

6645548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18281 (or 18279 counting only the distinct ones).

The product of its digits is 115200, while the sum is 38.

The square root of 6645548 is about 2577.8960413484. The cubic root of 6645548 is about 188.0082612938.

The spelling of 6645548 in words is "six million, six hundred forty-five thousand, five hundred forty-eight".