6678756 has 72 divisors (see below), whose sum is σ = 20442240. Its totient is φ = 1794816.

The previous prime is 6678751. The next prime is 6678767. The reversal of 6678756 is 6578766.

It is a super-3 number, since 3×6678756³ (a number of 21 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6678751) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3505 + ... + 5063.

It is an arithmetic number, because the mean of its divisors is an integer number (283920).

Almost surely, 2^6678756 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 6678756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10221120).

6678756 is an abundant number, since it is smaller than the sum of its proper divisors (13763484).

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

6678756 is a wasteful number, since it uses less digits than its factorization.

6678756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593 (or 1588 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 6678756 is about 2584.3289264333. The cubic root of 6678756 is about 188.3209020606.

The spelling of 6678756 in words is "six million, six hundred seventy-eight thousand, seven hundred fifty-six".