6418404 has 18 divisors (see below), whose sum is σ = 16224390. Its totient is φ = 2139456.

The previous prime is 6418397. The next prime is 6418417. The reversal of 6418404 is 4048146.

6418404 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3348900 + 3069504 = 1830^2 + 1752^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 89109 + ... + 89180.

It is an arithmetic number, because the mean of its divisors is an integer number (901355).

Almost surely, 2^6418404 is an apocalyptic number.

It is an amenable number.

6418404 is an abundant number, since it is smaller than the sum of its proper divisors (9805986).

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

6418404 is a wasteful number, since it uses less digits than its factorization.

6418404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178299 (or 178294 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 6418404 is about 2533.4569268097. The cubic root of 6418404 is about 185.8413492803.

It can be divided in two parts, 641 and 8404, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 6418404 in words is "six million, four hundred eighteen thousand, four hundred four".