6978776 has 48 divisors (see below), whose sum is σ = 16039800. Its totient is φ = 2830464.

The previous prime is 6978761. The next prime is 6978779. The reversal of 6978776 is 6778796.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6978779) 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 11 ways as a sum of consecutive naturals, for example, 6980 + ... + 7916.

Almost surely, 2^6978776 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 6978776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8019900).

6978776 is an abundant number, since it is smaller than the sum of its proper divisors (9061024).

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

6978776 is a wasteful number, since it uses less digits than its factorization.

6978776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976 (or 965 counting only the distinct ones).

The product of its digits is 889056, while the sum is 50.

The square root of 6978776 is about 2641.7373071522. The cubic root of 6978776 is about 191.0995889734.

The spelling of 6978776 in words is "six million, nine hundred seventy-eight thousand, seven hundred seventy-six".