6778770 has 64 divisors (see below), whose sum is σ = 17335296. Its totient is φ = 1693440.

The previous prime is 6778769. The next prime is 6778777. The reversal of 6778770 is 778776.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6778777) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34312 + ... + 34508.

It is an arithmetic number, because the mean of its divisors is an integer number (270864).

Almost surely, 2^6778770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6778770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8667648).

6778770 is an abundant number, since it is smaller than the sum of its proper divisors (10556526).

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

6778770 is a wasteful number, since it uses less digits than its factorization.

6778770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275.

The product of its (nonzero) digits is 115248, while the sum is 42.

The square root of 6778770 is about 2603.6071132181. The cubic root of 6778770 is about 189.2562800864.

The spelling of 6778770 in words is "six million, seven hundred seventy-eight thousand, seven hundred seventy".