6606780 has 48 divisors (see below), whose sum is σ = 19141920. Its totient is φ = 1700608.

The previous prime is 6606779. The next prime is 6606811. The reversal of 6606780 is 876066.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 159 + ... + 3638.

It is an arithmetic number, because the mean of its divisors is an integer number (398790).

Almost surely, 2^6606780 is an apocalyptic number.

6606780 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 6606780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9570960).

6606780 is an abundant number, since it is smaller than the sum of its proper divisors (12535140).

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

6606780 is a wasteful number, since it uses less digits than its factorization.

6606780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3838 (or 3836 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 6606780 is about 2570.3657327314. The cubic root of 6606780 is about 187.6419547223.

The spelling of 6606780 in words is "six million, six hundred six thousand, seven hundred eighty".