6750840 has 64 divisors (see below), whose sum is σ = 20489760. Its totient is φ = 1779200.

The previous prime is 6750829. The next prime is 6750841. The reversal of 6750840 is 480576.

It is a happy number.

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 = 6750798 and 6750807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6750841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11842 + ... + 12398.

Almost surely, 2^6750840 is an apocalyptic number.

6750840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6750840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10244880).

6750840 is an abundant number, since it is smaller than the sum of its proper divisors (13738920).

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

6750840 is a wasteful number, since it uses less digits than its factorization.

6750840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672 (or 668 counting only the distinct ones).

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

The square root of 6750840 is about 2598.2378643996. The cubic root of 6750840 is about 188.9959966678.

The spelling of 6750840 in words is "six million, seven hundred fifty thousand, eight hundred forty".