6780564 has 48 divisors (see below), whose sum is σ = 20092800. Its totient is φ = 1937088.

The previous prime is 6780551. The next prime is 6780581. The reversal of 6780564 is 4650876.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3729 + ... + 5240.

It is an arithmetic number, because the mean of its divisors is an integer number (418600).

Almost surely, 2^6780564 is an apocalyptic number.

It is an amenable number.

6780564 is an abundant number, since it is smaller than the sum of its proper divisors (13312236).

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

6780564 is a wasteful number, since it uses less digits than its factorization.

6780564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8989 (or 8981 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 6780564 is about 2603.9516124537. The cubic root of 6780564 is about 189.2729741582.

The spelling of 6780564 in words is "six million, seven hundred eighty thousand, five hundred sixty-four".