6880440 has 64 divisors (see below), whose sum is σ = 23592960. Its totient is φ = 1572480.

The previous prime is 6880439. The next prime is 6880441. The reversal of 6880440 is 440886.

It is an interprime number because it is at equal distance from previous prime (6880439) and next prime (6880441).

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

It is a junction number, because it is equal to n+sod(n) for n = 6880398 and 6880407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6880441) by changing a digit.

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, 3256 + ... + 4935.

It is an arithmetic number, because the mean of its divisors is an integer number (368640).

Almost surely, 2^6880440 is an apocalyptic number.

6880440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6880440 is an abundant number, since it is smaller than the sum of its proper divisors (16712520).

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

6880440 is a wasteful number, since it uses less digits than its factorization.

6880440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8212 (or 8208 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 6880440 is about 2623.0592825935. The cubic root of 6880440 is about 190.1977626918.

It can be divided in two parts, 68 and 80440, that added together give a palindrome (80508).

The spelling of 6880440 in words is "six million, eight hundred eighty thousand, four hundred forty".