6645084 has 12 divisors (see below), whose sum is σ = 15505224. Its totient is φ = 2215024.

The previous prime is 6645083. The next prime is 6645131. The reversal of 6645084 is 4805466.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6645083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276867 + ... + 276890.

It is an arithmetic number, because the mean of its divisors is an integer number (1292102).

Almost surely, 2^6645084 is an apocalyptic number.

It is an amenable number.

6645084 is an abundant number, since it is smaller than the sum of its proper divisors (8860140).

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

6645084 is a wasteful number, since it uses less digits than its factorization.

6645084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553764 (or 553762 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 6645084 is about 2577.8060439063. The cubic root of 6645084 is about 188.0038855391.

It can be divided in two parts, 66 and 45084, that added together give a triangular number (45150 = T₃₀₀).

The spelling of 6645084 in words is "six million, six hundred forty-five thousand, eighty-four".