6541998 has 8 divisors (see below), whose sum is σ = 13084008. Its totient is φ = 2180664.

The previous prime is 6541993. The next prime is 6541999. The reversal of 6541998 is 8991456.

It is a sphenic number, since it is the product of 3 distinct primes.

6541998 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6541993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545161 + ... + 545172.

It is an arithmetic number, because the mean of its divisors is an integer number (1635501).

Almost surely, 2^6541998 is an apocalyptic number.

6541998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6541998 is a wasteful number, since it uses less digits than its factorization.

6541998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090338.

The product of its digits is 77760, while the sum is 42.

The square root of 6541998 is about 2557.7329805904. The cubic root of 6541998 is about 187.0266388504.

The spelling of 6541998 in words is "six million, five hundred forty-one thousand, nine hundred ninety-eight".