6818404 has 6 divisors (see below), whose sum is σ = 11932214. Its totient is φ = 3409200.

The previous prime is 6818401. The next prime is 6818407. The reversal of 6818404 is 4048186.

It is an interprime number because it is at equal distance from previous prime (6818401) and next prime (6818407).

It can be written as a sum of positive squares in only one way, i.e., 5280804 + 1537600 = 2298^2 + 1240^2 .

It is not an unprimeable number, because it can be changed into a prime (6818401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 852297 + ... + 852304.

Almost surely, 2^6818404 is an apocalyptic number.

It is an amenable number.

6818404 is a deficient number, since it is larger than the sum of its proper divisors (5113810).

6818404 is a wasteful number, since it uses less digits than its factorization.

6818404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704605 (or 1704603 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 6818404 is about 2611.2073835680. The cubic root of 6818404 is about 189.6244103830.

The spelling of 6818404 in words is "six million, eight hundred eighteen thousand, four hundred four".