6778180 has 12 divisors (see below), whose sum is σ = 14234220. Its totient is φ = 2711264.

The previous prime is 6778153. The next prime is 6778183. The reversal of 6778180 is 818776.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1679616 + 5098564 = 1296^2 + 2258^2 .

It is a super-2 number, since 2×6778180² = 91887448224800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6778183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169435 + ... + 169474.

It is an arithmetic number, because the mean of its divisors is an integer number (1186185).

Almost surely, 2^6778180 is an apocalyptic number.

It is an amenable number.

6778180 is an abundant number, since it is smaller than the sum of its proper divisors (7456040).

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

6778180 is a wasteful number, since it uses less digits than its factorization.

6778180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338918 (or 338916 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 6778180 is about 2603.4938064071. The cubic root of 6778180 is about 189.2507891962.

The spelling of 6778180 in words is "six million, seven hundred seventy-eight thousand, one hundred eighty".