6678624 has 48 divisors (see below), whose sum is σ = 17790192. Its totient is φ = 2193408.

The previous prime is 6678593. The next prime is 6678629. The reversal of 6678624 is 4268766.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6678629) 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, 6532 + ... + 7484.

It is an arithmetic number, because the mean of its divisors is an integer number (370629).

Almost surely, 2^6678624 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6678624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8895096).

6678624 is an abundant number, since it is smaller than the sum of its proper divisors (11111568).

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

6678624 is a wasteful number, since it uses less digits than its factorization.

6678624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1039 (or 1031 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 6678624 is about 2584.3033877624. The cubic root of 6678624 is about 188.3196613843.

Subtracting from 6678624 its product of digits (96768), we obtain a palindrome (6581856).

The spelling of 6678624 in words is "six million, six hundred seventy-eight thousand, six hundred twenty-four".