6378404 has 12 divisors (see below), whose sum is σ = 11345628. Its totient is φ = 3136800.

The previous prime is 6378403. The next prime is 6378409. The reversal of 6378404 is 4048736.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1960000 + 4418404 = 1400^2 + 2102^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6378401) 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, 12827 + ... + 13314.

It is an arithmetic number, because the mean of its divisors is an integer number (945469).

Almost surely, 2^6378404 is an apocalyptic number.

It is an amenable number.

6378404 is a deficient number, since it is larger than the sum of its proper divisors (4967224).

6378404 is a wasteful number, since it uses less digits than its factorization.

6378404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26206 (or 26204 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 6378404 is about 2525.5502370771. The cubic root of 6378404 is about 185.4544851922.

The spelling of 6378404 in words is "six million, three hundred seventy-eight thousand, four hundred four".