6504780 has 24 divisors (see below), whose sum is σ = 18213552. Its totient is φ = 1734592.

The previous prime is 6504769. The next prime is 6504803. The reversal of 6504780 is 874056.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54147 + ... + 54266.

It is an arithmetic number, because the mean of its divisors is an integer number (758898).

Almost surely, 2^6504780 is an apocalyptic number.

6504780 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6504780 is an abundant number, since it is smaller than the sum of its proper divisors (11708772).

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

6504780 is a wasteful number, since it uses less digits than its factorization.

6504780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108425 (or 108423 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 6504780 is about 2550.4470196419. The cubic root of 6504780 is about 186.6712938195.

The spelling of 6504780 in words is "six million, five hundred four thousand, seven hundred eighty".