6404198 has 4 divisors (see below), whose sum is σ = 9606300. Its totient is φ = 3202098.

The previous prime is 6404191. The next prime is 6404227. The reversal of 6404198 is 8914046.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6404191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1601048 + ... + 1601051.

It is an arithmetic number, because the mean of its divisors is an integer number (2401575).

Almost surely, 2^6404198 is an apocalyptic number.

6404198 is a deficient number, since it is larger than the sum of its proper divisors (3202102).

6404198 is a wasteful number, since it uses less digits than its factorization.

6404198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3202101.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 6404198 is about 2530.6516947221. The cubic root of 6404198 is about 185.7041390343.

The spelling of 6404198 in words is "six million, four hundred four thousand, one hundred ninety-eight".