6500780 has 48 divisors (see below), whose sum is σ = 16045344. Its totient is φ = 2181120.

The previous prime is 6500779. The next prime is 6500801. The reversal of 6500780 is 870056.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1724 + ... + 3996.

It is an arithmetic number, because the mean of its divisors is an integer number (334278).

Almost surely, 2^6500780 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 6500780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8022672).

6500780 is an abundant number, since it is smaller than the sum of its proper divisors (9544564).

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

6500780 is a wasteful number, since it uses less digits than its factorization.

6500780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2306 (or 2304 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 6500780 is about 2549.6627227930. The cubic root of 6500780 is about 186.6330225646.

The spelling of 6500780 in words is "six million, five hundred thousand, seven hundred eighty".