6840504 has 64 divisors (see below), whose sum is σ = 20736000. Its totient is φ = 2072160.

The previous prime is 6840497. The next prime is 6840527. The reversal of 6840504 is 4050486.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 937 + ... + 3815.

It is an arithmetic number, because the mean of its divisors is an integer number (324000).

Almost surely, 2^6840504 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 6840504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10368000).

6840504 is an abundant number, since it is smaller than the sum of its proper divisors (13895496).

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

6840504 is a wasteful number, since it uses less digits than its factorization.

6840504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2905 (or 2895 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 6840504 is about 2615.4357189577. The cubic root of 6840504 is about 189.8290613997.

6840504 divided by its sum of digits (27) gives a palindrome (253352).

The spelling of 6840504 in words is "six million, eight hundred forty thousand, five hundred four".