6778450 has 48 divisors (see below), whose sum is σ = 14624064. Its totient is φ = 2289600.

The previous prime is 6778439. The next prime is 6778463. The reversal of 6778450 is 548776.

It is a happy number.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 37360 + ... + 37540.

It is an arithmetic number, because the mean of its divisors is an integer number (304668).

Almost surely, 2^6778450 is an apocalyptic number.

6778450 is an abundant number, since it is smaller than the sum of its proper divisors (7845614).

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

6778450 is a wasteful number, since it uses less digits than its factorization.

6778450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 302 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 6778450 is about 2603.5456592885. The cubic root of 6778450 is about 189.2533020160.

The spelling of 6778450 in words is "six million, seven hundred seventy-eight thousand, four hundred fifty".