6780404 has 12 divisors (see below), whose sum is σ = 11953284. Its totient is φ = 3365184.

The previous prime is 6780383. The next prime is 6780407. The reversal of 6780404 is 4040876.

It can be written as a sum of positive squares in 2 ways, for example, as 3724900 + 3055504 = 1930^2 + 1748^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a pancake number, because a pancake can be divided into 6780404 parts by 3682 straight cuts.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6780407) 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, 5639 + ... + 6734.

It is an arithmetic number, because the mean of its divisors is an integer number (996107).

Almost surely, 2^6780404 is an apocalyptic number.

It is an amenable number.

6780404 is a deficient number, since it is larger than the sum of its proper divisors (5172880).

6780404 is a wasteful number, since it uses less digits than its factorization.

6780404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12514 (or 12512 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 6780404 is about 2603.9208897353. The cubic root of 6780404 is about 189.2714853974.

The spelling of 6780404 in words is "six million, seven hundred eighty thousand, four hundred four".