6787816 has 32 divisors (see below), whose sum is σ = 14826240. Its totient is φ = 2852928.

The previous prime is 6787801. The next prime is 6787841. The reversal of 6787816 is 6187876.

It is an alternating number because its digits alternate between even and odd.

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, 1825 + ... + 4111.

It is an arithmetic number, because the mean of its divisors is an integer number (463320).

Almost surely, 2^6787816 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 6787816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7413120).

6787816 is an abundant number, since it is smaller than the sum of its proper divisors (8038424).

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

6787816 is a wasteful number, since it uses less digits than its factorization.

6787816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2353 (or 2349 counting only the distinct ones).

The product of its digits is 112896, while the sum is 43.

The square root of 6787816 is about 2605.3437393173. The cubic root of 6787816 is about 189.3404276695.

The spelling of 6787816 in words is "six million, seven hundred eighty-seven thousand, eight hundred sixteen".