6421198 has 16 divisors (see below), whose sum is σ = 11048544. Its totient is φ = 2741760.

The previous prime is 6421159. The next prime is 6421201. The reversal of 6421198 is 8911246.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4038 + ... + 5398.

It is an arithmetic number, because the mean of its divisors is an integer number (690534).

Almost surely, 2^6421198 is an apocalyptic number.

6421198 is a deficient number, since it is larger than the sum of its proper divisors (4627346).

6421198 is a wasteful number, since it uses less digits than its factorization.

6421198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707.

The product of its digits is 3456, while the sum is 31.

The square root of 6421198 is about 2534.0082872793. The cubic root of 6421198 is about 185.8683116116.

The spelling of 6421198 in words is "six million, four hundred twenty-one thousand, one hundred ninety-eight".