6778086 has 32 divisors (see below), whose sum is σ = 15717888. Its totient is φ = 1908480.

The previous prime is 6778073. The next prime is 6778099. The reversal of 6778086 is 6808776.

It is an interprime number because it is at equal distance from previous prime (6778073) and next prime (6778099).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nialpdrome in base 14.

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, 1846 + ... + 4118.

It is an arithmetic number, because the mean of its divisors is an integer number (491184).

Almost surely, 2^6778086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6778086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7858944).

6778086 is an abundant number, since it is smaller than the sum of its proper divisors (8939802).

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

6778086 is a wasteful number, since it uses less digits than its factorization.

6778086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2356.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 6778086 is about 2603.4757536801. The cubic root of 6778086 is about 189.2499143470.

The spelling of 6778086 in words is "six million, seven hundred seventy-eight thousand, eighty-six".