6198440 has 32 divisors (see below), whose sum is σ = 14122080. Its totient is φ = 2448192.

The previous prime is 6198391. The next prime is 6198443. The reversal of 6198440 is 448916.

It is a junction number, because it is equal to n+sod(n) for n = 6198397 and 6198406.

It is not an unprimeable number, because it can be changed into a prime (6198443) 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 in 7 ways as a sum of consecutive naturals, for example, 2387 + ... + 4253.

It is an arithmetic number, because the mean of its divisors is an integer number (441315).

Almost surely, 2^6198440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6198440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7061040).

6198440 is an abundant number, since it is smaller than the sum of its proper divisors (7923640).

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

6198440 is a wasteful number, since it uses less digits than its factorization.

6198440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961 (or 1957 counting only the distinct ones).

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

The square root of 6198440 is about 2489.6666443522. Note that the first 4 decimals coincide. The cubic root of 6198440 is about 183.6936458527.

The spelling of 6198440 in words is "six million, one hundred ninety-eight thousand, four hundred forty".