6723780 has 72 divisors (see below), whose sum is σ = 21909888. Its totient is φ = 1536192.

The previous prime is 6723779. The next prime is 6723799. The reversal of 6723780 is 873276.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1797 + ... + 4083.

It is an arithmetic number, because the mean of its divisors is an integer number (304304).

Almost surely, 2^6723780 is an apocalyptic number.

6723780 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6723780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10954944).

6723780 is an abundant number, since it is smaller than the sum of its proper divisors (15186108).

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

6723780 is a wasteful number, since it uses less digits than its factorization.

6723780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313 (or 2304 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 6723780 is about 2593.0252601932. The cubic root of 6723780 is about 188.7431352853.

It can be divided in two parts, 6723 and 780, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 6723780 in words is "six million, seven hundred twenty-three thousand, seven hundred eighty".